Exposure to the Sun can accelerate the ageing process.A:step up B:decreaseC:stop D:control
Exposure to the Sun can accelerate the ageing process.
A:step up
B:decrease
C:stop
D:control
B:decrease
C:stop
D:control
参考解析
解析：本句意思：暴露在阳光下会加速老化过程。accelerate（使）加速，加快。step up增加，提高（数量、速度等）; decrease（使大小、数量等）减少，减小，降低；stop（使）停止，停下；control限制，限定，约束，管理，管制。
相关考题：
Developing the project schedule is often an iterative process. It determines the planned start and finish dates for project activities and milestones. Schedule development can require the review and revision of duration estimates and resource estimates to create an approved project schedule that can serve as a baseline to(75) progress.A．analyzeB．trackC．levelD．extend
●Developing the project schedule is often an iterative process. It determines the planned start and finish dates for project activities and milestones. Schedule development can require the review and revision of duration estimates and resource estimates to create an approved project schedule that can serve as a baseline to （75） progress.（75）A. analyzeB. trackC. levelD. extend
AWhen you look at the sky at night，the moon looks bigger than the stars． In fact，the moon is much smaller than the stars．It is much smaller than the earth． But the moon is much closer to us than any star． That is why it looks so big． If you hold a coin close．to your eye，it looks big．If you look at it across the room，it looks small．The moon moves around the earth． It makes one trip in about four weeks． The moon looks flat(扁的)to us． But it is a round ball，like the earth．People once thought the moon had fire(火) on it． They thought the fire made it bright．Now we know the moon is like a mirror( 镜子 )． It gets its light from the sun Our sunlight comes from the sun，too: What is the sun? The sun is star． The stars we can see have their own light． There are many big stars we can-t see． Their light has burned out． Others are still bright，but they are so far away that we can-t see them． The sun looks bigger and much brighter than other stars because it is the nearest of all stars． The sun and the other stars we see are very hot，but the air around us saves us from(使------免于) the heat(热量) of the sun．The sun gives us light and warmth．It makes plants grow and leaves turn green． It makes life possible on our earth．It is a life-giving star．( )21． The moon looks bigger because__________ ．A． some stars are smaller than itB．it is between the sun and the earthC．it is the closest to the earthD．it is very bright
23．The moon is bright because__________A． there is some fire 'on itB． it is near the sun，tooC． there is big mirror on itD． it can get light from the sun
24． The passage tells us __________．A． the sun is not the biggest starB． the sun is bigger than any other starC． only the sun can shineD． the sun is one of the farthest stars from us
Which of the following is true about the motion of the moon?[A] The moon and the sun are moving in the same plane.[B] The moon revolved along the ecliptic.[C] The moon moves faster than the sun.[D] The position of the moon can be found changed in an hour's time.
Evidence from the economists and the building industries shows that ______.A) exposure to asbestos fibres is cancer-causingB) asbestos is in extensive use in building industryC) use of asbestos is being reduced graduallyD) exposure to asbestos fibres can be reduced significantly
The smallest size of flaw that can be detected on a radiograph examination of a weld will be indicated by the ______.A.film speedB.penetrometerC.exposure readingD.time of exposure
Individuals who have consumed alcohol within 24 hours of exposure to H2S can tolerate ______.A.unusually large concentrations of H2SB.smaller than normal concentrations of H2SC.moderate concentrations of H2S without the usual reactionsD.longer exposure to H2S concentrations
共用题干Sunbath and Skin CancerIn the summer,millions of Americans will offer up their bodies to the sun rays.A tan mndi-cates health and beauty,and most sun worshippers will sacrifice a lot to achieve it,including themselves.With each hour, the sun's ultraviolet radiation (紫外线）produces irreversible（不可逆的） damage,hastening the development of unsightly wrinkles.And with each year on the beach or roof-top,the sunbather increases his risk of getting skin cancer. Skin cancer is by far the most common form of cancer. An estimated 400,000 new cases will be detected this year in the United States, and almost all of them can be blamed on over-exposure to the sun.Fortunately,most of these cancers are highly curable .But they can he disfiguring and take time to treat. For that reason,sun worshippers should treat deity with a good deal of awe（敬畏）. Sunburn,of course,is the initial hazard posed by UV radiation.Prolonged exposure to UV,howev-er , interferes with the production of collagen fibers（胶原纤维）in the dermis（真皮层）, causing the skin to lose elasticity（弹性）and creating premature wrinkles. Further deterioration（恶化）of the dermis deprives the epidermis（表皮层）of nutrition and causes it to become thin and dry.Cancer is UV's final result.Shortwave radiant energy,especially from the UV-B band,breaks the strands（股、缕）of DNA. Enzymes（酶）work constantly to rearrange the DNA into proper Se-quence,but with repeated UV exposure,the repair process may eventually break down.Then the mutant（变异的）DNA may produce a colony of cancer cells. But skin cancer may be avoided with a good dose of common sense.People with fair skin and blue eyes who burn easily stand the high-est risk .Special danger spots are the parts of the body most constantly exposed to the sun,such as the cheeks , nose , lower lip and the ears. People who have already developed precancerous（癌变前的）lesions（伤害）or had one skin-cancer growth stand a greatly increased chance of developing others.Dermatologists（皮肤科医生）recommend avoiding the sun when it is most intense between 11 a.m.and 3 p.m.Anyone who insists on sunbathing should use a good sun screen.These lotions and salves（药膏）contain chemicals that block out the burning UVB radiation while permitting the tanning rays to reach the skin. The underlined word“deity”in the third paragraph refers to________.A: something mysteriousB: the skin cancerC: the sunD:over-exposure to the sun
共用题干Sunbath and Skin CancerIn the summer,millions of Americans will offer up their bodies to the sun rays.A tan mndi-cates health and beauty,and most sun worshippers will sacrifice a lot to achieve it,including themselves.With each hour, the sun's ultraviolet radiation (紫外线）produces irreversible（不可逆的） damage,hastening the development of unsightly wrinkles.And with each year on the beach or roof-top,the sunbather increases his risk of getting skin cancer. Skin cancer is by far the most common form of cancer. An estimated 400,000 new cases will be detected this year in the United States, and almost all of them can be blamed on over-exposure to the sun.Fortunately,most of these cancers are highly curable .But they can he disfiguring and take time to treat. For that reason,sun worshippers should treat deity with a good deal of awe（敬畏）. Sunburn,of course,is the initial hazard posed by UV radiation.Prolonged exposure to UV,howev-er , interferes with the production of collagen fibers（胶原纤维）in the dermis（真皮层）, causing the skin to lose elasticity（弹性）and creating premature wrinkles. Further deterioration（恶化）of the dermis deprives the epidermis（表皮层）of nutrition and causes it to become thin and dry.Cancer is UV's final result.Shortwave radiant energy,especially from the UV-B band,breaks the strands（股、缕）of DNA. Enzymes（酶）work constantly to rearrange the DNA into proper Se-quence,but with repeated UV exposure,the repair process may eventually break down.Then the mutant（变异的）DNA may produce a colony of cancer cells. But skin cancer may be avoided with a good dose of common sense.People with fair skin and blue eyes who burn easily stand the high-est risk .Special danger spots are the parts of the body most constantly exposed to the sun,such as the cheeks , nose , lower lip and the ears. People who have already developed precancerous（癌变前的）lesions（伤害）or had one skin-cancer growth stand a greatly increased chance of developing others.Dermatologists（皮肤科医生）recommend avoiding the sun when it is most intense between 11 a.m.and 3 p.m.Anyone who insists on sunbathing should use a good sun screen.These lotions and salves（药膏）contain chemicals that block out the burning UVB radiation while permitting the tanning rays to reach the skin. Which of the following comes first as a possible damage by UV radiation?A: Sunburn.B: The loss of skin elasticity.C: Dryness of epidermis.D: The deterioration of dermis.
Passage ThreeWhenyou stretch out in the sun you can do one of the three things:you can use no suntan oil,an ordinary sun tan oil;or Bergasol.If you don′t use any sun tan oil when you′re in the sun,you will burn surprisinglyquickly.If you use an ordinary sun tan oil,you will protectyour skin to a lesser or greater degree.How much protection depends on the"protection-factor number"on the bottle.Some oils block out so manyof the sun′s rays and you can stay in the sun all day without burning but youwon′t go very brown,either.Bergasol will protect your skin like an ordinary sun tan oil.It also has a tan acceleratorthat speeds up the rate at which the sun activates the skin cells that producemelanin(黑色素).It is melanin that gives the skin itsbrown colour.Bergasol enables you to go brown faster,am as the days pass thedifference will become more obvious.Unfortunately,this special formulation isn′tCheap to prepare.So Bergasol is rather more expensive than ordinary sun tanoil.However,the price looks more attractive as you do.Bergasoi?It makes you go brown fasterProtection Many people imagine that"cover-up"means you don′t get a tan.Nothing to show for yourholiday.Not so.With"cover-up",you can get brown if you want to.The point of"cover-up"is to protect your skin from the harmful rays of the sunwhich,according to the experts,make your skinlook older.That′s what Solex Cover-up is allabout--protection for your skin.It has a Sun Protection Factor 8,which makesit suitable for anyone.Find out how it works for you by consulting the SolexSun Chart.On sale wherever Solex is.With Solex Cover-up,you can tan asslowly as you like.As gently as you like.And with much lesschance of peeling.Your tan will lookbetter.Your skin will stay young longer.Solex Gentle tan..,full protectionWhat is the most attractive feature ofSolex Cover-up?A.It helps one get a more beautiful tan.B.It is often on sale in supermarkets.C.It blocks out more sun's rays thanother oils.D.It helps one tan gradually and gently.
Passage ThreeWhenyou stretch out in the sun you can do one of the three things:you can use no suntan oil,an ordinary sun tan oil;or Bergasol.If you don′t use any sun tan oil when you′re in the sun,you will burn surprisinglyquickly.If you use an ordinary sun tan oil,you will protectyour skin to a lesser or greater degree.How much protection depends on the"protection-factor number"on the bottle.Some oils block out so manyof the sun′s rays and you can stay in the sun all day without burning but youwon′t go very brown,either.Bergasol will protect your skin like an ordinary sun tan oil.It also has a tan acceleratorthat speeds up the rate at which the sun activates the skin cells that producemelanin(黑色素).It is melanin that gives the skin itsbrown colour.Bergasol enables you to go brown faster,am as the days pass thedifference will become more obvious.Unfortunately,this special formulation isn′tCheap to prepare.So Bergasol is rather more expensive than ordinary sun tanoil.However,the price looks more attractive as you do.Bergasoi?It makes you go brown fasterProtection Many people imagine that"cover-up"means you don′t get a tan.Nothing to show for yourholiday.Not so.With"cover-up",you can get brown if you want to.The point of"cover-up"is to protect your skin from the harmful rays of the sunwhich,according to the experts,make your skinlook older.That′s what Solex Cover-up is allabout--protection for your skin.It has a Sun Protection Factor 8,which makesit suitable for anyone.Find out how it works for you by consulting the SolexSun Chart.On sale wherever Solex is.With Solex Cover-up,you can tan asslowly as you like.As gently as you like.And with much lesschance of peeling.Your tan will lookbetter.Your skin will stay young longer.Solex Gentle tan..,full protectionCompared with Solex,Bergasol__A.helps one go brown more quicklyB.better protects one's skinC.is more competitive in priceD.is a better sun tan oil
Passage ThreeWhenyou stretch out in the sun you can do one of the three things:you can use no suntan oil,an ordinary sun tan oil;or Bergasol.If you don′t use any sun tan oil when you′re in the sun,you will burn surprisinglyquickly.If you use an ordinary sun tan oil,you will protectyour skin to a lesser or greater degree.How much protection depends on the"protection-factor number"on the bottle.Some oils block out so manyof the sun′s rays and you can stay in the sun all day without burning but youwon′t go very brown,either.Bergasol will protect your skin like an ordinary sun tan oil.It also has a tan acceleratorthat speeds up the rate at which the sun activates the skin cells that producemelanin(黑色素).It is melanin that gives the skin itsbrown colour.Bergasol enables you to go brown faster,am as the days pass thedifference will become more obvious.Unfortunately,this special formulation isn′tCheap to prepare.So Bergasol is rather more expensive than ordinary sun tanoil.However,the price looks more attractive as you do.Bergasoi?It makes you go brown fasterProtection Many people imagine that"cover-up"means you don′t get a tan.Nothing to show for yourholiday.Not so.With"cover-up",you can get brown if you want to.The point of"cover-up"is to protect your skin from the harmful rays of the sunwhich,according to the experts,make your skinlook older.That′s what Solex Cover-up is allabout--protection for your skin.It has a Sun Protection Factor 8,which makesit suitable for anyone.Find out how it works for you by consulting the SolexSun Chart.On sale wherever Solex is.With Solex Cover-up,you can tan asslowly as you like.As gently as you like.And with much lesschance of peeling.Your tan will lookbetter.Your skin will stay young longer.Solex Gentle tan..,full protectionWhat can we learn from thesecond advertisement?A.It is easy to get a suntan in summer.B.Suntan is regarded as a sign ofprotection.C.Sunlight could make one look older.D.Everyone wants to get a suntan fromholiday.
Passage ThreeWhenyou stretch out in the sun you can do one of the three things:you can use no suntan oil,an ordinary sun tan oil;or Bergasol.If you don′t use any sun tan oil when you′re in the sun,you will burn surprisinglyquickly.If you use an ordinary sun tan oil,you will protectyour skin to a lesser or greater degree.How much protection depends on the"protection-factor number"on the bottle.Some oils block out so manyof the sun′s rays and you can stay in the sun all day without burning but youwon′t go very brown,either.Bergasol will protect your skin like an ordinary sun tan oil.It also has a tan acceleratorthat speeds up the rate at which the sun activates the skin cells that producemelanin(黑色素).It is melanin that gives the skin itsbrown colour.Bergasol enables you to go brown faster,am as the days pass thedifference will become more obvious.Unfortunately,this special formulation isn′tCheap to prepare.So Bergasol is rather more expensive than ordinary sun tanoil.However,the price looks more attractive as you do.Bergasoi?It makes you go brown fasterProtection Many people imagine that"cover-up"means you don′t get a tan.Nothing to show for yourholiday.Not so.With"cover-up",you can get brown if you want to.The point of"cover-up"is to protect your skin from the harmful rays of the sunwhich,according to the experts,make your skinlook older.That′s what Solex Cover-up is allabout--protection for your skin.It has a Sun Protection Factor 8,which makesit suitable for anyone.Find out how it works for you by consulting the SolexSun Chart.On sale wherever Solex is.With Solex Cover-up,you can tan asslowly as you like.As gently as you like.And with much lesschance of peeling.Your tan will lookbetter.Your skin will stay young longer.Solex Gentle tan..,full protectionWhy is Solex suitable for everyone?A.Its price is more attractive.B.It can be used to relieve sunburn.C.It can make the skin cells more active.D.It has a mild protection factor.
单选题Developing the project schedule is often an iterative process. It determines the planned start and finish dates for project activities and milestones. Schedule development can require the review and revision of duration estimates and resource estimates to create an approved project schedule that can serve as a baseline to（）progress.AanalyzeBtrackClevelDextend
单选题The farmers know that fertilizer can accelerate the growth of these tomato plants.Aaccommodate Baccord Cquicken Daccomplish
单选题10.The author concludes in the last paragraph that _____.Agovernments have spent lots of time in solving the ageing problemBpopulation ageing is a hard problem, but it needs to be solved urgentlyCpeople are too busy to solve the population ageing problemDmuch time and effort will be lost in solving the ageing problem
单选题The smallest size of flaw that can be detected on a radiograph examination of a weld will be indicated by the（）.Afilm speedBpenetrometerCexposure readingDtime of exposure
单选题ASome are built underground.BSome can be eaten.CMost are sewed with grasses.DMost are dried by the sun.
单选题The passage implies that ______.Athe fever process is widespread because moderate fevers have benefitsBthe reduction of fevers can inhibit bacterial growthCman can use sun lamp to raise lizards’ temperatureDCrayfish injected with bacteria have a purpose for moving to hot areas
单选题If you have 70 Yuan, you can ______ in May.Ago to Yunnan MuseumBwatch Scottish dancingClisten to jazzDstay in Sun Hotel for one night
单选题Severe exposure to chlorine gas can be fatal. Chlorine gas is primarily a（）.Arespiratory irritantBskin burning agentCblood poisoning agentDnerve paralyzing irritant