题目内容
Living things are dying out quickly. Let’s ask ____ destroying them in the past years.
A. what part people have been playing
B. people have played in
C. what part people have played in
D. people have been playing what part
C
解析:
宾语从句中要用陈述句的语序。
举一反三单元同步过关卷系列答案It is only during the last few years that man has generally realized that in the world of nature a balance exists between all forms of life. No living thing can exist by itself: it is a part of a system (体系) in which all forms of 
life are joined together. If we change one part of the natural order, this will in its turn almost certainly bring about changes in some other part.
The cutting down of forests reduces the supply of oxygen. The killing of weeds and insects by chemicals leads to the wide spread poisoning of animals and birds. The throwing of waste products into the ocean harm to life in the sea, while waste gases change the chemical balance of the atmosphere.
And so we could go on, adding more examples, until in despair (绝望) we might feel like giving up the struggle to control and keep within limits these harmful human activities. Man is very clever at changing the world around him to satisfy his immediate needs, but not so clever at looking far ahead, or at thinking about what the future results of
his action might be.
【小题1】The first paragraph mainly tells us that __________.
| A．everything in nature can’t exist without the help of human beings |
| B．no living thing can exist naturally |
| C．all living things in nature depend on each other |
| D．man has well known the importance of the balance for a long time |
| A．it is very important to protect forests |
| B．there are some living things which can exist all by themselves without change |
| C．all forms of life belong to a system in which all the part can be changed for one another |
D．we cannot change one form of life or matter without disturbing (扰乱) the balance of nature |
| A．the production of chemical factories | B．the gas in the outer space |
| C．the mixture of gases that surrounds the earth | D．the health of the human body |
| A．man shouldn’t think only about his immediate needs without enough thought on the future results |
| B．man is very clever in planning his distant future |
| C．man often feels that he has to give up in despair |
| D．man is always anxious to control and keep his actives within limits |
The light from the campfire brightened the darkness, but it could not prevent the damp cold of Dennis’s Swamp (沼泽地) creeping into their bones. It was a strange place. Martin and Tom wished that they had not accepted Jack’s dare. They liked camping, but not near this swamp.
“So,” Martin asked as they sat watching the hot coals. “How did this place get its name?”
“Are you sure you want to hear it ? It’s a scary story,” warned Jack.
“Of course!” cried out Tom. “If there were anything to be scared of, you wouldn’t have chosen this place!”
“Ok, but don’t say I didn’t warn you,” said Jack, and he began this tale.
“Way back in time, a man called Dennis tried to start a farm here. He built that cottage over there to live in. In those days, the area looked quite different ---- it was covered with tall trees and the swamp was a crystal-clear river. After three hard years, Dennis had cleared several fields and planted crops. He was so proud of his success that he refused to listen to advice.
“‘You are clearing too much land,’ warned one old man. ‘ The land is a living thing. It will hit back at you if you abuse it. ’
“‘Silly fool,’ said Dennis to himself. ‘If I clear more land, I can grow more crops. I’ll become wealthier. He’s just jealous!’”
“Dennis continued to chop down trees. Small animals that relied on them for food and shelter were destroyed. He was so eager to expand his farm that he did not notice the river flowing slowly towards his door. He did not notice salt seeping to the surface of the land. He did not notice swamp plants choking all the native plants.”
“What happened?” Martin asked. It was growing colder. He trembled, twisting his body closer to the fire.
“The land hit back ---- just as the old man warned,” Jack shrugged. “Dennis disappeared. Old folks around here believe that swamp plants moved up from the river and dragged him underwater. His body was never found.”
“What a stupid story,” laughed Tom. “Plants can’t …” Before he had finished speaking, he screamed and fainted (晕倒). The other two boys jumped up with fright, staring at Tom. Suddenly, they burst out laughing. Some green swamp ivy (常春藤) had covered Tom’s face. It was a while before Tom could appreciate the joke.
【小题1】The underlined word “dare” in Paragraph 1 is closed in meaning to ________.
| A．courage | B．assistance | C．instruction | D．challenge |
| A．To frighten them. |
| B．To satisfy their curiosity. |
| C．To warn them of the danger of the place. |
| D．To persuade them to camp in the swamp. |
| A．The old man envied him. | B．The old man was foolish |
| C．He was too busy to listen to others. | D．He was greedy for more crops. |
| A．He saw Dennis’s shadow | B．He was scared by a plant |
| C．His friends played a joke on him. | D．The weather became extremely cold. |
| A．Grasp all, lose all |
| B．No sweat, no sweet. |
| C．It is no use crying over spilt milk |
| D．He who makes no mistakes makes nothing. |