句型转换。
请根据要求改写下列句子，每空一词。
1.Jack’s already back from work.（改为一般疑问句）
_______ Jack back from work _______?
2. Some very large dinosaurs weighed over 100,000 kilograms.（对划线部分提问）
_______ _______ did some very large dinosaurs weigh?
3.He has changed his diet. He wants to be healthier.（合并为一句）
He has changed his diet _______ _______ to be healthier.
4.It was raining very heavily last night.（改为感叹句）
_______ _______ the rain was last night!
5. In Switzerland, the government doesn’t allow people to cut down trees.（改为被动语态）
In Switzerland, people _______ _______ to cut down trees.
通城学典默写能手系列答案
金牌教辅培优优选卷期末冲刺100分系列答案科目：初中英语 来源：2015-2016学年山东夏津万隆实验中学初二上期末模拟检测英语卷（解析版） 题型：单项填空
—I failed the English test again. —______! But work hard, and you can do well next time.
A. Good luck B. Bad Luck
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There are seven days in _____ week and Sunday is ______ first day.
A. a; a B. a; the C. the; the D. the; a
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--- ______ difficult time!
--- Yes, they only could make a living by selling newspapers and carrying bricks.
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Scientists have long believed one way to stop the Earth’s air from warming is by planting more trees. The idea is that more trees will take in or absorb(吸收) some of the CO2 in the air. CO2 is a gas released by cars, factories and other human activities. The gas traps heat in the Earth’s air, which warms the planet. However, two new studies have found that trees may not be as helpful in reducing CO2 as thought.
The first study was done at Duke University in Durham, North Carolina. Researchers pumped(打气) extra CO2 into a test area where green trees were growing. The trees grew thirty-four percent faster during the first three years. However, in time, the trees slowed to about their normal growth rate. The scientists say this is because trees need other nutrients(营养素), such as nitrogen(氮).
In the second study, researchers from Duke and Bowdoin College in Brunswick, Maine examined the soil(泥土) around trees. They discovered that as the leaves broke down into the soil, all the carbon was not trapped in the soil. Much of it was let into the air as CO2.
The findings of the two studies were published last month in Nature magazine. They suggest there is limited(有限的) value in planting trees to reduce the CO2 pollution in the air.
Forest planting has been a part of negotiations(谈判) on a world agreement to reduce greenhouse gases that scientists believe cause global warming. The United States, Canada, Japan and some other countries have supported the idea. But this new research suggests the idea is not as effective as environmental activists(积极分子) had thought. Scientist Ram Oren of Duke University led the study on tree growth. He says that earlier estimates(估计) on the ability of forests to absorb CO2 were overly hopeful.
Some other scientists say the research provides some of the first evidence on how trees react(反应) to CO2. Some other scientists say the research disputes(质疑) a belief among some coal and power companies. The companies say that more CO2 in the air will not create harmful global warming. Instead, they say it will increase forests and other plants.
1.Why did the researchers put trees in extra CO2 in the first study?
A. To learn whether trees can still absorb CO2 under extreme conditions.
B. To get more oxygen from these trees.
C. To know how much CO2 that trees can absorb.
D. To see the effect of CO2 on the growth rate of these trees.
2.What happened to the leaves falling from the trees in the second study?
A. They broke down and the main parts turned into oxygen.
B. They broke down and the carbon had mainly turned into CO2.
C. They broke down and the carbon was mainly absorbed in the soil.
D. They absorbed more CO2.
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A. just right B. not acceptable
C. a bit too cheerful D. too dangerous
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书面表达。
明天是母亲节，李玫想给妈妈一份特殊的礼物。根据所给信息，写一篇70个词左右的文章。短文开头已给出，不计入总词数内。
In the morning | In the afternoon | In the evening |
buy some flowers | clean the house | talk to mother |
buy some fruit and food for dinner | cook supper | watch TV with mother |
Mother’s Day is coming
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
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The sun and its planets solar system.
A.is called B.are called
C.calls D.called
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