You should be thankful to all the people who have helped you．你应该感谢所有帮助过你的人．．题目和参考答案——青夏教育精英家教网—

题目内容

17．You should be thankful to all the people who have helped you．
你应该感谢所有帮助过你的人．．

分析你应该感谢所有帮助过你的人．

解答答案：你应该感谢所有帮助过你的人．这里是一个含有定语从句who have helped you的复合句，主句是You should be thankful to all the people，be thankful to 对某人感激，should表示应该，故你应该感谢所有的人，定语从句修饰people，表示那些曾经帮助过你的人，故答案是你应该感谢所有帮助过你的人．

点评定语从句，一个简单句跟在一名词或代词后（先行词）进行修饰限定，就叫做定语从句．在主句中充当定语成分

练习册系列答案

9．-Mary，could you help me？-Wait a moment．I _________．（　　）

	A．	read a book		B．	did my homework
	C．	was watching TV		D．	am cooking dinner

6．-It's said that the new highway has been completed．
-Yes，but we don't know ______it's to be opened to traffic soon．（　　）

12．-___________ is your favorite day？
-Monday．Because we have P．E．and music．（　　）

根据表格信息，从每小题的A、B、C、D中选出最佳答案。

The earth is 4 600 million years old. We humans have lived on earth for only 35 000 years, but during this period we have changed our planet a lot in many ways. Some things we’ve done are very good for the earth while some are bad.

All over the world, people have cut down millions of trees. When it rains or when the wind blows, the earth is taken away. Forests have become deserts, so more and more sorts of animals and plants are disappearing.

In big cities, cars and buses have polluted the air. Many people in cities now have health problems.

Factories have also polluted the land and the water. As a result, many rivers and lakes are nowdead.

Around the earth, there’s a special kind of oxygen called “ozone”(O3). It is important to theearth. But now air pollution is destroying it and that has made a very big hole in the ozone layer. Too much harmful radiation from the sun passes through the hole and reaches the earth directly. This is very dangerous because this kind of radiation can cause cancer.

Carbon dioxide (CO2) in the air has increased a lot. It mainly comes from burning oil, coal andwood. This has formed a “blanket” around the earth. The heat from the sun can’t escape so thetemperature is rising. This is called “the greenhouse effect”. It causes the level of the oceans to rise and the climate of the earth to change.

All these problems are very serious, so we must do something now.

根据短文内容，从题中所给的A、B、C、D四个选项中选择最佳答案。

1.What does our planet mean here?

A. The sun. B. Mars.

C. The moon. D. The earth.

2.In the passage, “blanket” refers to_______________.

A. carbon dioxide around the earth

B. the ozone layer in the sky

C. the forests around the world

D. pollution all over the world

3.The level of the oceans is rising because of _______.

A．pollution