网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
Trees become unhealthy if the gardener _____.
A
allows too many branches to grow in the middle
B
does not protect them from wind
C
forces them to grow too quickly
D
damages some of the small side branches
参考答案
参考解析
解析：
第二段最后一句“The health of a tree may be encouraged by removing branches that are blocking up the centre”说明，剪去阻塞树木中央空间的枝条可使树木健康生长，相反，保留这些枝条则会导致树木长得不健康。
第二段最后一句“The health of a tree may be encouraged by removing branches that are blocking up the centre”说明，剪去阻塞树木中央空间的枝条可使树木健康生长，相反，保留这些枝条则会导致树木长得不健康。
更多 “单选题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” 相关考题
考题
_____________ we plant, _________________our city will be.A. The more trees, the beautiful B. The less trees, the more beautifulC. The more trees, the more beautiful D. The less trees, the beautiful
考题
4．— Did you have anyone ______the trees?—Yes，l had the trees ______．A． to water ;waterB． to water; wateredC． water ; to be wateredD． water; watered
考题
The gardener is taking care of the place, no one _____ there at present.A:livingB:livesC:livedD:to live
考题
Which of the following usually causes a tree to grow unhealthy?A. Giving a tree a special shape and a definite height.B. Removing small side branches and making a tree look less thick.C. Allowing too many branches to grow in the middle.D. Having a tree surrounded by many other trees.
考题
My Deratization Exemption Certificate will ______ by the end of this month．A.become dueB.become validC.become lawfulD.become effective
考题
As a cold front passes an observer, pressure ______.A.drops and winds become variableB.rises and winds become gustyC.drops and winds become gustyD.rises and winds become variable
考题
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 for
this 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.
考题
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 for
this 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.
考题
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 for
this 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 middle
B.does not protect them from wind
C.forces them to grow too quickly
D.damages some of the small side branches
考题
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 for
this 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 year
B.as quickly as possible
C.occasionally when necessary
D.regular every winter
考题
共用题干
Forests for CitiesYou are standing in a beautiful forest in Japan. The air is clean and smells like plants and flowers.There are 175 different kinds of trees,and 60 kinds of birds live here.______(1) You are downtown in the city of Nara,Japan,in Kasugayama Forest,the oldest urban forest in the world.It was started more than a thousand years ago,and today it's very popular with tourists and artists.Cities around the world are working to protect their urban forests. Some urban forests are parks,and some are just streets with a lot of trees.But all urban forests have many good effects on the environment.______(2)They also stop the noise from heavy traffic.They even make the weather better because they make the air 3-5 degrees cooler,and they stop strong winds. Urban forests also have many good effects on people. They make the city more beautiful. In a crowded area,they give people a place to relax and spend time in nature.______(3)In some countries,people are starting new urban forests. In England,there are now 1.3 million trees in an urban forest called Thames Chase,east of London. It was started in 1990, and it has grown very fast.Walking and bicycle clubs use the forest,and there are programs for children and artists.______(4)Some older cities don't have space for a big urban forest,but planting trees on the streets makes the city better. Scientists found that commuters（通勤人员）feel more relaxed when they can see trees.Trees are even good for business.______(5)In the future,urban forests will become even more important as our cities grow bigger. In the megacities（超大城 市）of tomorrow,people will need more green space to live a comfortable life. Planting trees today will make our lives better in the future.______(4)A: People spend more time at shopping centers that have trees.B: In hot countries,urban forests are cooi places for walking and other healthy exercises.C: But you are not in rural area.D: Trees take pollution out of the air.E: In 2033,it will have 5 million trees.F: It has many kinds of birds in the country.
考题
单选题As a gardener, Jim has to water the flowers and ______ the grass in the garden every morning.A
trimB
improveC
refineD
repair
考题
单选题What does the author tell us in this passage?A
How trees help prevent droughts and floods.B
The relationship between trees and man.C
How an empire fell to pieces in ancient times.D
A story of trees.
考题
单选题What did U.S. Secretary of Agriculture do last week?A
He banned McDonald from using meat from unhealthy cattle.B
He stopped the selling of meat from unhealthy cattle.C
He lost the trust from the public.D
He issued a recall of the meat from unhealthy cattle sold last month.
考题
单选题Why do forests in many parts of the world slowly disappear?A
New trees are not looked after properly.B
Many trees have been cut down by man.C
Man has not paid enough attention to planting trees.D
All of the above.
考题
单选题Which of the following is NOT true for the use of tusks?A
To dig for salt.B
To remove the bark from the tree.C
To move trees and branches to clear a path.D
To pull trees and branches to establish territory.
考题
单选题Why does land become desert after all trees are cut down?A
Because nothing remains on land except floods.B
Because there are no longer trees to keep the rain and protect the top-soil.C
Because too much rain sinks in and washes away the top-soil.D
Because roots of the trees break up the soil.
考题
单选题A
The lifecycle of trees.B
The number of trees.C
The intensity of solar burning.D
The quality of air.
考题
单选题As a cold front passes an observer，pressure（）.A
drops and winds become variableB
rises and winds become gustyC
drops and winds become gustyD
rises and winds become variable
考题
单选题A good gardener prunes a tree _____.A
at intervals throughout the yearB
as quickly as possibleC
occasionally when necessaryD
regular every winter
考题
单选题Prolonged and unseasonable frosts produce frost rings in deciduous trees, which grow in moderate climates. Frost rings do not appear in any of the fossilized deciduous trees that have been found in Antarctica. Hence, it is unlikely that such frosts occurred in Antarctica at the time the fossilized trees lived. Which of the following is an assumption on which the argument depends?A
There are fossilized nondeciduous trees from Antarctica that bear frost rings.B
Deciduous trees are more likely to bear frost rings than are other tree varieties.C
The process of fossilization does not completely obscure frost rings in deciduous trees.D
Present-day deciduous trees are more sensitive to changes in temperature than were the deciduous trees of ancient Antarctica.E
Prolonged and unseasonable frosts that might have occurred in Antarctica when the now-fossilized trees were still living did not always produce frost rings in deciduous trees.
热门标签
最新试卷
