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they are inside 选择
_______________their spacesuits or the walls of their spacecraft,
if they are inside
[A] but
[B] because
[C] so
[D] for
相关考题：
Why did they found Google?A． Because they loved working with the Internet so much.B． Because they wanted to make a lot of money through the Internet.C． Because they hoped to make it easier to find specific information online.D． Because they believed everything is possible.
The city assigned a policeman to the school crossing because () traffic there was so heavy. A.aB.anC.theD.one
She left the reception in a hurry because she ____________ arrive at the airport so early the next morning. (A) needed(B) had to(C) might(D) used to
The directors have a meeting on Friday ____________ there is nothing to discuss. (A) so long as(B) unless(C) so that(D) because
My parents are quite()with their life today because they have experienced so much suffering. A、satisfiedB、satisfactory
Whether you believe it or not, it is ()that cause your illness. A、because of your overweightB、your being overweightC、because you are overweightD、you are so overweight
—Why does food contamination seem to occur so frequently these days? —() A.Because people do not realize the harmfulness of it.B.Because contaminated food products are easy to produce and sell.C.Because those food manufacturers only focus on making money.
The cows jumped upon their masters because______.A. they were not fedB. they were so hungryC. they were whipped so hard by themD. they were so happy
Forces other than damaging winds are also at work inside tornadoes (龙卷风) . Sometimes,as the wind passes a house, the walls and ceiling burst apart as if a bomb had gone off inside. This explosion is caused by the low air pressure at the center of a tornado.The pressure at the center of a tornado is usually 13 pounds per square inch. However,inside the house the air pressure is normal, about 15 pounds per square inch.The difference of 2 pounds per square inch between the inside and outside pressure may not seem like much. But suppose a tornado passes over a small building that measures 20 by 10 by feet. On each square inch of the building, there is 2 pounds of pressure from the insidethat is not balanced by air pressure outside the building. On the ceiling, that adds up to an unbalanced pressure of 57600 pounds. The pressure of the four walls adds up to 172800 pounds.If windows are open in the building, some of the inside air will rush out through them.This will balance the pressure inside and outside the building.But if the windows are shut tightly, the huge inside pressure may cause the building to burst.Unfortunately, heavy rain often occurs in the storms that later produce tornadoes,so people often shut their windows. This may cause far worse damage later.21、 What did the paragraph before this passage most probably discuss?A、 Measuring rainfall from a stormB、 The kinds of damage caused by explosionsC、 The powerful winds of tornadoes22、 Which of the following is the main topic of the passage?A、 How tornadoes can be preventedB、 When tornadoes usually occurC、 Why tornadoes cause so much damage23、 Tornadoes can destroy buildings because the()A、 force of a tornado increases the air pressure in a buildingB、 air pressure inside a tornado is less than the air pressure inside a buildingC、 air pressure at the center of a tornado is over 172000 pounds24、 What is the difference per square inch between the air pressure inside a building and the air pressure inside a tornado?A、 2 poundsB、 13 poundsC、 15 pounds25、 What would happen if the windows are shut tightly in the stormy weather?A、 Tornadoes may be formedB、 The house may be apartC、 There may not be any pressure inside the building
Interviewer-------- Why is English so important?David------- Well, English is so important primarily because so many people speak it and use it, so it has now become the lingua franca in the world in a way that we’ve never seen before. We’ve never had a world language of this kind before. So people are learning it not just to be able tocommunicate with native speakers, but also with speakers of other language around world.Interviewer-------And why has it become that dominant language?David------I think the reason for that is actually very complicated, although in the twentieth century, we can just see that it’s the rise of the US military and consumer power. I mean the technology, all the big developments in technology largely came from the US. So all of these developments actually were produced within the English language, and people had to learn English in order to understand them, or to benefit from them. The Internet is only one example of that kind. Once a language has got into that position of dominance, it’s actually very different to shift it. So we could be seeing the emergence of other big languages in the world becoming more important than they have been, like Spanish, but it’s unlikely that they’re going to shift the English from its position of dominance.36. English is important, according to David, __________________________. A). because it has become a world language B). because so many people speak and use it C). because a lot of people are learning it D). because it is the lingua franca37. English has become the dominant language in the world________________________. A). because it has always been the way B). for a reason that is very complicated C). only in the 20th century D). for no reasons38. English became the dominant language in the 20th century_________________________. A). in the USAB). because of the increase in American consumer powerC). because developments in technology came mainly from USA. D). all over the world.39. People had to learn English______________________.A). because developments in technology were made by English speakers B). because they needed to understand the new developments in technology C). to use the InternetD). to speak with native Americans40. David thinks that__________________________.A). it will be easy for another language to become dominant B). English will not always be the dominant languageC). it will not be easy for another language to become dominant D). English will be the dominant language
The Emergency Position Indicating Radiobeacon on a cargo vessel must be stowed ______.A.in an inside passagewayB.in an approved bracketC.so that it is accessible from the bridge of the vesselD.so that it will float free if the vessel sinks
－Why does he look so anxious －Because there are so many problems(). A、remaining to settleB、remained settlingC、remaining to be settledD、remained to be settled
() a rainy day, so all the farmers had to stay inside. A、It wasB、It beingC、BeingD、all the above
Why does common man in England seem to be as accurate-or as inaccurate-as the weatherman in his prediction?A．Because the weather in English is SO variable．B．Because the common man in England has as much knowledge about weatheras the weatherman．C．Because by lunch time there could be thunder and lightening in EnglandD．Because English weather always defies forecast
Government cannot operate effectively ___________ it is free from such interference.A.so long asB.so thatC.unlessD.because
It was because she was too inexperienced_she didn’t know how to deal with thesituation.A. so that B. that C. that is why D. so
This kind of animals are on the verge of extinction,because so many are being killed for their fur.A:drying up B:dying out C:being exported D:being transplanted
Why were the French troops in Canada defeated by the British during theSeven Years.War?（）A、Because they were not used to the weather in Canada.B、Because they did not get support from the local people.C、Because they did not receive the supplies they needed so badly.D、Because the British had larger and better settlements in Canada.
Why is QoS important in a converged network?（）A、Because data does not need to arrive intact, so data transfer rates can be variableB、Because lost voice-data packets must be retransmittedC、Because voice data packets should arrive quickly and sequentially, and with no lost dataD、Because voice data packets must follow a single dedicated path through the network
The rows inside three Oracle tables supporting a customer order entry system are frequently accessed together by means of a table join. Because data is always being added to the tables, you leave a lot of extra space inside each block to accommodate growth. Which of the following types of tables would be useful for storing the data in this context?（）A、Temporary tables B、Index-organized tables C、Cluster tables D、Standard Oracle tables
单选题Because our work is very busy, so we need to relax at midday.AWe are very busy,BOur work being busy,COur work so very busy,DBecause our work so very busy,
单选题People like to talk to Mike because he knows so many funny _____ and stories.AanecdotesBpamphletsCtricksDtrinkets
单选题The water was so（）that we could see the fish inside clearly.AtransparentBobviousCapparentDvisible
单选题The inside light in an inflatable liferaft is turned on（）.Aautomatically as the liferaft inflatesBwith a switch near the boarding handleCat night because the light has a photosensitive switchDby screwing the bulb in after the raft is inflated
单选题67 A while B because C in case D so thatAABBCCDD