发布时间 : 星期二 文章【人教版】2017-2018学年高中英语选修七：全册课时作业(含答案)更新完毕开始阅读e1cf1b685b8102d276a20029bd64783e08127d54
答案：C
20．解析：the meaning behind the little empty box空盒子背后(隐藏)的含义。 答案：B Ⅳ.阅读理解
The sea has always interested man. From it we can get food, minerals, and treasure. For thousands of years，we could sail on it. But we could not go far beneath its surface. Man wants to explore deep into the sea. However, we are not fish. We must breathe air, so we can't stay under the water's surface for any length of time. To explore deep water, man faces even more dangers and problems. A diver who wants to stay under water for more than a few minutes must breathe air or a special mixture of gases. He can wear a diving suit and have air pumped to him from above. He can carry a tank of air on his back and breathe through a nose and a mouthpiece. Water weighs 800 times as much as air. Tons of water pushes against a diver deep in the sea. His body is under great pressure. When a diver is under great pressure, his blood takes in some of the gases he breathes. As he rises to surface, the water pressure becomes less. If the diver rises too quickly，the gases in his blood form bubbles. The diver is then suffering from the bends. The bends can cause a diver to double up in pain. They can even kill him.
1.On the whole, this passage is about ________. A．special mixtures of gases in deep sea B．the problems man faces in deep－sea diving C．air pressure under the surface of sea water D．a kind of illness that man suffers in the sea 2．A diver's body in deep water ________. A．is under great pressure B．is just like that of a fish C．suffers from the bends D．weighs very little
3．The passage does not say so, but it makes you think that ________. A．deep divers should be in good health
B．divers explore the deep sea only for treasure
C．diving under the water too quickly causes a kind of illness D．there is a special mixture of gases under the sea 4．Why does a diver get the bends?
A．He tries to do exercise under the water. B．His diving suit weighs too much. C．He comes to the surface too quickly. D．The air in his blood is used up. 5．From the passage we can see that ________.
A．the sea began to interest man in the last few years B．man is not at home deep in the sea
C．all divers will get the bends sooner or later
D．the air in the sea water will kill a diver if he is not careful 答案与解析：
自古以来，海底丰富的资源一直吸引着人类。然而，从事深水潜水探索却不是一件轻松的工作。本文向我们介绍的就是深水潜水员所面临的困难和挑战。
1．解析：由文章结构可以看出，文章首先点明了海洋对我们人类的重大意义，然后提出了文章要说明的主题：To explore deep water，man faces even more dangers and problems.下文围绕这一主题做了详细的说明。
答案：B
2．解析：根据文中His body is under great pressure.可确定答案。 答案：A
3．解析：潜水员在深水里要承受巨大的压力，浮到水面时，水压骤减，这对人体提出了很大的挑战。由此可以推断从事深水潜水工作的人，身体应该很健康(in good health)。
答案：A
4．解析：由If the diver rises too quickly ...The diver is then suffering from the bends.可知，潜水员得bends的原因是在海水中上升得太快。
答案：C
5．解析：从文章内容可以知道，在深海潜水时，人会面临更大的危险和更多的麻烦(more dangers and problems)。由此可以判断，人在深海是很不舒适的。
答案：B
3.2 新提升·课时作业 Ⅰ.单句语法填空
1．Usually a child's behavior is a ________(reflect) of his family environment. 2．When I entered the room, I found everything in the room was turned upside ________.
3．Mary lay on the floor trembling, too ________(scare) to move.
4．If we work with a strong will, we can overcome any difficulty, ________ great it is.
5．The driver couldn't react quickly enough when the road bent ________(sharp)． 6．It's typical of him to speak almost without ________(pause) for breath; he had better listen to others' opinion.
7．He abandons himself ________ drinking although he is a taxi driver. 8．—Is Peter there?
—Hold ________， please. I'll see if I can find him for you.
9．He is quite aware ________ the risk, but he has no choice but to go ahead. 10．The likely reactions of the market would need to be reflected ________ before we acted.
11．Only then ________ he become aware of the effects of his action. 12．You have been sitting on my hat and now it is badly out ________ shape. 13．The final score of the basketball match was 93－94. We were only ________(narrow) beaten.
14．The thief fell to the ground, his left foot ________(break) and blood ________(run) down from his mouth.
15．John received an invitation to dinner, and with his work ________(finish), he gladly accepted it.
答案：
1．reflection 2.down 3.scared 4.however 5.sharply 6.pausing 7.to 8.on 9.of 10.on 11.did 12.of 13.narrowly 14.broken; running 15.finished
Ⅱ.完成句子
1．She laid her dress on the bed ________________(保持平整)．(neat) 2．________________(你意识到) something was wrong？(aware)
3．This battle ________________(生动记载) in the article, which was written by a former soldier.(vivid)
4．He ________________(几乎吓死) by the strange noise.(scare)
5．I ________________(一直在思考) the matter since last year.(reflect) 6．The movie ________________(十分可怕), so most of the audience buried their face in their hands.(awe)
7．The programme ________________(瞄向) improving the health of women of all ages.(target)
8．A series of attacks ________________(已经加重了) fears of more violence.(sharpen)
9．________________(多么令人敬畏的风景) the iceberg is in the Antarctic! 10．He lay on the grass ________________(两眼望着天空)．
答案：1.to keep it neat 2.Were you aware that 3.was vividly recorded 4.was nearly scared to death 5.have been reflecting on 6.was really awesome 7.is targeted at 8.have sharpened 9.What an awesome sight 10.with his eyes looking at the sky
Ⅲ.语法填空
Gulangyu is a tourist island off the coast of Xiamen, Fujian Province in southeast China. __1__ is about one and a half square kilometers in area, has a population of around fifteen thousand and __2__(connect) to the mainland by ferry(渡船)．
The island of Gulangyu is a pedestrian only destination, __3__ cars and motorcycles are banned on the island. The only vehicles on the islands are several fire trucks and passenger transport vehicles. The narrow streets on the island, together with the architecture of __4__(vary) styles from around the world, give the island a unique __5__(appear)．
Gulangyu is famous __6__ its architecture and there are a lot of ex－colonial buildings, __7__ it used to be a place of residence for westerners. The island also has China's only piano museum, __8__(give) it the nickname of Piano Island or The Island of Music. There are over 200 pianos on this island. The Chinese name is called because of __9__ sound generated by the ocean waves hitting the reefs.
The University of Design is set almost in the middle of the island and has some beautiful sculptures(雕塑). There is also a very old Buddhist temple not far __10__. The end of the island also has some lovely gardens with a lot of varieties of trees.
答案：1.It 2.is connected 3.so 4.various 5.appearance 6.for 7.since/as/because 8.giving 9.the
10．away
Ⅳ.阅读理解
What do you know about the sea? You may have seen it. Some of us have swum or bathed in it. It looks beautiful on a fine sunny day and it can be very rough when