阅读理解。
Even if trees cannot walk, they are still on the move.
In parts of the Arctic, entire forests are moving northward. Across the Arctic, temperatures are rising faster than anywhere else in the world. As that happens, the tree line that marks where forests stop and the treeless tundra (冻原) starts has been shifting northward. Trees growing along the tree line must protect themselves from the cold wind. To do this,_plants tend to grow horizontal (水平的) branches low to the ground. The energy it takes for trees to grow this way means they don't have enough energy to make seeds.
But as Earth's climate has been warming, trees no longer have to just grow horizontally. Many can instead grow up toward the sky. This takes less energy. And with all that leftover energy, these trees have started producing more seeds. This happens especially in places where white spruce (白云杉) grows.
White spruce, which is a North American tree, is quite able to produce a lot of seeds, which can move long distances in the wind. When windblown seeds end up on the tundra beyond the tree line, they eventually can sprout(发芽) new trees. This explains how a forest can move. Of course, the process would work only if the tundra were warm enough. But in recent years, the whole planet has been warming.
New trees will provide shelters for some snow. Keeping the sun's rays from making the white surface disappear. Instead, the trees absorb the sun's heat. This warms the surrounding air. The extra warmth encourages even more trees to produce seeds. That further boosts a forest's ability to expand. In addition, more trees will trap more snow, preventing much of it from being blown away. Snow can trap heat in the soil below, which encourages trees to grow. The recent rise of temperatures has helped more trees grow past the tree line. People worry about impacts on the animals that depend on frozen conditions for food and shelter.
1.What is the main cause of the trees in the Arctic moving northward?
A.The shrinking of northern tundra.
B.The rising temperature.
C.The fierce and cold wind.
D.The abundant resources in the north.
2.What does the underlined word “this” in Paragraph 2 mean?
A.To produce more seeds.
B.To move northward.
C.To respond to the climate change.
D.To protect themselves from the cold wind.
3.What can be inferred from the last paragraph?
A.New trees can trap the snow, which may make the soil colder.
B.The trapped snow prevents new trees from producing more seeds.
C.New trees can make the surrounding air warmer.
D.New trees can bring more food and shelter to local animals.
4.The passage is most probably taken from ________.
A.a science report B.a health report
C.a fashion magazine D.a children's magazine
高三英语阅读理解中等难度题
阅读理解。
Even if trees cannot walk, they are still on the move.
In parts of the Arctic, entire forests are moving northward. Across the Arctic, temperatures are rising faster than anywhere else in the world. As that happens, the tree line that marks where forests stop and the treeless tundra (冻原) starts has been shifting northward. Trees growing along the tree line must protect themselves from the cold wind. To do this,_plants tend to grow horizontal (水平的) branches low to the ground. The energy it takes for trees to grow this way means they don't have enough energy to make seeds.
But as Earth's climate has been warming, trees no longer have to just grow horizontally. Many can instead grow up toward the sky. This takes less energy. And with all that leftover energy, these trees have started producing more seeds. This happens especially in places where white spruce (白云杉) grows.
White spruce, which is a North American tree, is quite able to produce a lot of seeds, which can move long distances in the wind. When windblown seeds end up on the tundra beyond the tree line, they eventually can sprout(发芽) new trees. This explains how a forest can move. Of course, the process would work only if the tundra were warm enough. But in recent years, the whole planet has been warming.
New trees will provide shelters for some snow. Keeping the sun's rays from making the white surface disappear. Instead, the trees absorb the sun's heat. This warms the surrounding air. The extra warmth encourages even more trees to produce seeds. That further boosts a forest's ability to expand. In addition, more trees will trap more snow, preventing much of it from being blown away. Snow can trap heat in the soil below, which encourages trees to grow. The recent rise of temperatures has helped more trees grow past the tree line. People worry about impacts on the animals that depend on frozen conditions for food and shelter.
1.What is the main cause of the trees in the Arctic moving northward?
A.The shrinking of northern tundra.
B.The rising temperature.
C.The fierce and cold wind.
D.The abundant resources in the north.
2.What does the underlined word “this” in Paragraph 2 mean?
A.To produce more seeds.
B.To move northward.
C.To respond to the climate change.
D.To protect themselves from the cold wind.
3.What can be inferred from the last paragraph?
A.New trees can trap the snow, which may make the soil colder.
B.The trapped snow prevents new trees from producing more seeds.
C.New trees can make the surrounding air warmer.
D.New trees can bring more food and shelter to local animals.
4.The passage is most probably taken from ________.
A.a science report B.a health report
C.a fashion magazine D.a children's magazine
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Your parents have a deep affection for you. Even if they are , they can still keep out the wind and rain for you.
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They are walking down the way _______ there are many trees on ______side.
A. that, both B. in which, either
C. on which, either D. /, neither
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Every one complains. Even if you argue that you are the happiest person in the world, you still complain sometimes. Sometimes you complain: without even realizing ill, but rarely is it ever helpful.1.Here are some tips to stop complaint and give up the negative thoughts:
2.
When you find yourself thinking or saying a negative comment about something or someone, stop and force yourself to say something positive instead. Seek the help of a cheerful friend to change you when you complain and help you to see the positive in the situation.
Make a list of things we are grateful for.
We often complain about the things we don't have without noticing those things we already have. Be grateful for what we have in our life because we are lucky simply for being ourselves. 3.
Learn to adapt to the changes.
There are many things we can't change.4.Always find the positive side of each situation, regardless of however difficult the situation is, with parents' and friends' support, we can survive any life changes.
Allow yourself to express your feelings every once in a while.
Constantly ignored negative thoughts could add up if you are really going through a hard time, don't be afraid to share your feelings with close friends or family members or see a therapist.
Find what makes you happy.
5. Maybe it is time to make the hard decision to move on to another job or career. Uncover what your biggest complaints are about and see if you can change the situation to make you happy. Stop complaining, focus on the positive, and be kind always!
A. Change the way you think
B. Make positive people friends
C. The best and only thing we can do is to accept them
D. Are you constantly complaining about your present job?
E. Sometimes this list can be easy, full of hobbies you enjoy
F. So how can you manage to force yourselves to end complaining?
G. Set down things we are thankful for and we'll see that we don't have any reason to complain.
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