单选题A good gardener prunes a tree _____.Aat intervals throughout the yearBas quickly as possibleCoccasionally when necessaryDregular every winter
单选题
A good gardener prunes a tree _____.
A
at intervals throughout the year
B
as quickly as possible
C
occasionally when necessary
D
regular every winter
参考解析
解析：
根据第一段第一句“Trees should only be pruned when there is a good and clear reason for doing so”可知，必要时才需要修剪树木。
根据第一段第一句“Trees should only be pruned when there is a good and clear reason for doing so”可知，必要时才需要修剪树木。
相关考题：
Using many symbols makes __________for us to take notes more quickly.A． possible it isB． it possibleC． it is possibleD． that possible
it is the clear felling form. of land clearing，when the logging procedure fells every tree that has the most devastating effect on both the production of carbon emissions and on species loss. ()
The activated sludge strength should be checked at regular intervals and it is good that the color of the aeration compartment water is A.chocolateB.yellowC.blackishD.ivory-white
When is a switched network that is running the Spanning Tree Protocol considered to be fully converged?A．when all switches have the same BID as the root switchB．when all switches have received the MAC address of each neighboring switchC．when every enabled switch port has been assigned a unique identifierD．when every operating switch port is in either the blocking or forwarding stateE．when all switches are in either client, server, or transparent mode
The writer suggests that pruning should be done in winter because______.A. the cut surface can heal more quicklyB. open wounds on the tree run the less risk of getting diseasedC. a gardener can do pruning more easilyD. the leaves can interfere
What is NOT a requirement for testing the line throwing appliance on a vessel?A.The appliance should be tested every three monthsB.A regular service line should be used when testingC.A regular projectile should be used when testingD.An entry about the test must be made in the Official Log Book
______ blow more or less constantly（except when monsoons prevail）throughout all seasons at a mean speed of around 14 knots and are generally strongest in the late winter．A.Trade WindsB.Winds of the temperate zonesC.MonsoonsD.Land and Sea Breezes
Trees should only be pruned when there is a good and clear reason for doing so and,fortunately, the number of such reasons is small. Pruning involves the cutting away of overgrown and unwanted branches, and the inexperienced gardener can be encouraged by the thought that more damage results from doing it unnecessarily than from leaving the tree to grow in its own way.First, pruning may be done to make sure that trees have a desired shape or size. The object may be to get a tree of the right height, and at the same time to help the growth of small side branches which will thicken its appearance or give it a special shape. Secondly, pruning may be done to make the tree healthier. You may cut diseased or dead wood, or branches that are rubbing against each other and thus cause wounds. The health of a tree may be encouraged by removing branches that are blocking up the centre and so preventing the free movement of air.One result of pruning is that an open wound is left on the tree and this provides an easy entry for disease, but it is a wound that will heal. Often there is a race between the healing and the disease as to whether the tree will live or die, so that there is a period when the tree is at risk. It should be the aim of every gardener to reduce which has been pruned smooth and clean, for healing will be slowed down by roughness. You should allow the cut surface to dry for a few hurts and then paint it with one of the substances available from garden shops produced especially forthis purpose. Pruning is usually without interference from the leaves and also it is very unlikely that the cuts you make will bleed. If this does happen, it is, of course, impossible to paint them properly.Why is a special substance painted on the tree?A.To make a wound smooth.B.To prevent disease entering a wound.C.To cover a rough surface.D.To help a wound to dry.
Trees should only be pruned when there is a good and clear reason for doing so and,fortunately, the number of such reasons is small. Pruning involves the cutting away of overgrown and unwanted branches, and the inexperienced gardener can be encouraged by the thought that more damage results from doing it unnecessarily than from leaving the tree to grow in its own way.First, pruning may be done to make sure that trees have a desired shape or size. The object may be to get a tree of the right height, and at the same time to help the growth of small side branches which will thicken its appearance or give it a special shape. Secondly, pruning may be done to make the tree healthier. You may cut diseased or dead wood, or branches that are rubbing against each other and thus cause wounds. The health of a tree may be encouraged by removing branches that are blocking up the centre and so preventing the free movement of air.One result of pruning is that an open wound is left on the tree and this provides an easy entry for disease, but it is a wound that will heal. Often there is a race between the healing and the disease as to whether the tree will live or die, so that there is a period when the tree is at risk. It should be the aim of every gardener to reduce which has been pruned smooth and clean, for healing will be slowed down by roughness. You should allow the cut surface to dry for a few hurts and then paint it with one of the substances available from garden shops produced especially forthis purpose. Pruning is usually without interference from the leaves and also it is very unlikely that the cuts you make will bleed. If this does happen, it is, of course, impossible to paint them properly.?What was the author's purpose when writing this passage?A.To give practical instruction for pruning a tree.B.To give a general description of pruning.C.To explain how trees develop diseases.D.To discuss different methods of pruning.
Trees should only be pruned when there is a good and clear reason for doing so and,fortunately, the number of such reasons is small. Pruning involves the cutting away of overgrown and unwanted branches, and the inexperienced gardener can be encouraged by the thought that more damage results from doing it unnecessarily than from leaving the tree to grow in its own way.First, pruning may be done to make sure that trees have a desired shape or size. The object may be to get a tree of the right height, and at the same time to help the growth of small side branches which will thicken its appearance or give it a special shape. Secondly, pruning may be done to make the tree healthier. You may cut diseased or dead wood, or branches that are rubbing against each other and thus cause wounds. The health of a tree may be encouraged by removing branches that are blocking up the centre and so preventing the free movement of air.One result of pruning is that an open wound is left on the tree and this provides an easy entry for disease, but it is a wound that will heal. Often there is a race between the healing and the disease as to whether the tree will live or die, so that there is a period when the tree is at risk. It should be the aim of every gardener to reduce which has been pruned smooth and clean, for healing will be slowed down by roughness. You should allow the cut surface to dry for a few hurts and then paint it with one of the substances available from garden shops produced especially forthis purpose. Pruning is usually without interference from the leaves and also it is very unlikely that the cuts you make will bleed. If this does happen, it is, of course, impossible to paint them properly.Trees become unhealthy if the gardener__________.A.allows too many branches to grow in the middleB.does not protect them from windC.forces them to grow too quicklyD.damages some of the small side branches
Trees should only be pruned when there is a good and clear reason for doing so and,fortunately, the number of such reasons is small. Pruning involves the cutting away of overgrown and unwanted branches, and the inexperienced gardener can be encouraged by the thought that more damage results from doing it unnecessarily than from leaving the tree to grow in its own way.First, pruning may be done to make sure that trees have a desired shape or size. The object may be to get a tree of the right height, and at the same time to help the growth of small side branches which will thicken its appearance or give it a special shape. Secondly, pruning may be done to make the tree healthier. You may cut diseased or dead wood, or branches that are rubbing against each other and thus cause wounds. The health of a tree may be encouraged by removing branches that are blocking up the centre and so preventing the free movement of air.One result of pruning is that an open wound is left on the tree and this provides an easy entry for disease, but it is a wound that will heal. Often there is a race between the healing and the disease as to whether the tree will live or die, so that there is a period when the tree is at risk. It should be the aim of every gardener to reduce which has been pruned smooth and clean, for healing will be slowed down by roughness. You should allow the cut surface to dry for a few hurts and then paint it with one of the substances available from garden shops produced especially forthis purpose. Pruning is usually without interference from the leaves and also it is very unlikely that the cuts you make will bleed. If this does happen, it is, of course, impossible to paint them properly.A good gardener prunes a tree__________.A.at intervals throughout the yearB.as quickly as possibleC.occasionally when necessaryD.regular every winter
About one million Americans are diagnosed annually with skin cancer.A: every yearB: severelyC: activelyD: every month
Standing under a big tree to（）getting wet in a rain is not a good choice. This is especially true when it is the thunderstorm reason.AavoidBkeepCstopDdrop
Standing under a big tree to（）getting wet in a rain is not a good choice. This is especially true when it is the thunderstorm reason.A、avoidB、keepC、stopD、drop
When is a switched network that is running the Spanning Tree Protocol considered to be fully converged?（）A、when all switches have the same BID as the root switchB、when all switches have received the MAC address of each neighboring switchC、when every enabled switch port has been assigned a unique identifierD、when every operating switch port is in either the blocking or forwarding stateE、when all switches are in either client, server, or transparent mode
What will occur when a nonedge switch port that is configured for Rapid Spanning Tree does not receive a BPDU from its neighbor for three consecutive hello time intervals？（）A、RSTP information is automatically aged out.B、The port sends a TCN to the root bridge.C、The port moves to listening state.D、The port becomes a normal spanning tree port.
Which of these statements about PIM join messages in classic PIM-SM is correct？（）A、PIM join messages are sent every 60 seconds to refresh the upstream router’s mroute state for the multicast tree.B、Routers send a PIM join acknowledgement in response to each PIM join message received from a downstream router.C、PIM join messages are only sent when the multicast distribution tree is first being established.D、PIM join messages are sent every three minutes to refresh the upstream router’s mroute state for the multicast tree.
Which statement is true about the Manageability Monitor （MMON） background proces（）A、It transfers statistics from memory to disk at regular intervals.B、It coordinates the rebalance activity for disk groups when ASM is used.C、It communicates with the Automatic Storage Management （ASM） instance on behalf of the databaseinstance.D、It performs dynamic memory management when Automatic Shared Memory Management is enabledfor the database instance.
单选题If （） are taken at regular intervals, any unequal distribution of load will be easily found out.Aindicator diagramsBnomo-gramCtemperature readingsDpressure readings
单选题As a gardener, Jim has to water the flowers and ______ the grass in the garden every morning.AtrimBimproveCrefineDrepair
单选题（） blow more or less constantly（except when monsoons prevail）throughout all seasons at a mean speed of around 14 knots and are generally strongest in the late winter.ATrade WindsBWinds of the temperate zonesCMonsoonsDLand and Sea Breezes
单选题Standing under a big tree to（）getting wet in a rain is not a good choice. This is especially true when it is the thunderstorm reason.AavoidBkeepCstopDdrop
单选题What will occur when a nonedge switch port that is configured for Rapid Spanning Tree does not receive a BPDU from its neighbor for three consecutive hello time intervals？（）ARSTP information is automatically aged out.BThe port sends a TCN to the root bridge.CThe port moves to listening state.DThe port becomes a normal spanning tree port.
单选题What is NOT a requirement for testing the line throwing appliance on a vessel? （）AThe appliance should be tested every three monthsBA regular service line should be used when testingCA regular projectile should be used when testingDAn entry about the test must be made in the Official Log Book
单选题Which of these statements about PIM join messages in classic PIM-SM is correct？（）APIM join messages are sent every 60 seconds to refresh the upstream router’s mroute state for the multicast tree.BRouters send a PIM join acknowledgement in response to each PIM join message received from a downstream router.CPIM join messages are only sent when the multicast distribution tree is first being established.DPIM join messages are sent every three minutes to refresh the upstream router’s mroute state for the multicast tree.
单选题As shown in the diagram, in-memory statistics are transferred to the disk at regular intervals. Which background process performs this activity?（）ACKPTBSMONCMMONDDBWR
单选题Which statement is true about the Manageability Monitor （MMON） background proces（）AIt transfers statistics from memory to disk at regular intervals.BIt coordinates the rebalance activity for disk groups when ASM is used.CIt communicates with the Automatic Storage Management （ASM） instance on behalf of the databaseinstance.DIt performs dynamic memory management when Automatic Shared Memory Management is enabledfor the database instance.