阅读下列短文，从每题所给的四个选项中选出最佳选项。

　　Until men invented ways of staying underwater for more than a few minutes，the wonders of the world below the sea were almost unknown．And to make full use of the rich natural resources（资源）underwater was quite impossible．How could air be supplied to divers below the surface（表面）of the sea？There were pictures in the past showing men swimming under the surface with air bags tied to their bodies．A pipe from the bag carried air into the swimmer's mouth．But little progress was made in the invention of diving devices（潜水设备）until 1490，when the famous Italian painter Leonardo da Vinci（莱昂纳多·达芬奇）designed a complete diving suit．

　　In 1819 a German，called Siebe developed a way of forcing air into the head covering by a machine operated above the water．Finally，in 1837 he invented the“hard-hat suit” which was used for almost a century．It had a metal covering for the head and an air pipe attached（连接）to a machine above the water．It also had small openings to remove unwanted air．But there were two dangers to the hard-hat suit．One was a sudden rise to the surface，caused by too great a supply of air．The other was the crushing（挤压）of the body，caused by a sudden dive into deep water．

1．The passage is mainly about ________．

[　　]

A．how to invent diving devices

B．how to develop a way of diving

C．how to design a diving suit

D．the development of diving devices

2．It was dangerous for the diver in a hard-hat suit if ________．

[　　]

A．the air pipe was long

B．the openings removed unwanted air

C．he dived into deep water

D．the machine suddenly supplied too much air

3．Why did people try to invent good equipment for diving？

[　　]

A．To make better use of the natural resources under water

B．To visit the sea world

C．To catch more fish

D．To paint better pictures．

书面表达

　　假如你是北京某大学的教师，钟言。你对越来越多的大学生吸烟甚感忧虑，为此给某英文报纸的编辑写信反映这个问题。信的主要内容如下：

　　（1）两年前，仅有15％的男生吸烟；如今吸烟者多达55％，甚至有些女生也吸烟；

　　（2）简明扼要地举二至三例，说明吸烟的危害性；

　　（3）奉劝大学生们为保持身体健康应戒烟。

　　注意事项：

　　（1）信的内容完整、语句连贯，词数约在80～100之间。

　　（2）只需要把所提示的要点写清楚，不要逐条译成英语。

　　（3）信端、正文的第一句话都已写在下面，不计入总词数。

　　Dear Editor,

　　I'm a university teacher and I'm worried about the increasing number of smokers on campus(校园).

阅读下列短文，根据所读内容在短文后的表格中填入恰当的单词。注意：表格的每个空格只填一个单词。
Educating girls quite possibly yields a higher rate of return than any other investment （投资）available in the developing world. Women's education may be unusual territory for economists（经济学家）, but enhancing women's contribution to development is actually as much an economic as a social issue. And economics（经济因素）, with its emphasis on incentives, provides guideposts that point to an explanation for why so many girls are deprived（剥夺）of an education.
　　Parents in low-income countries fail to invest（投资）in their daughters because they do not expect them to make an economic contribution to the family: girls grow up only to marry into somebody else's family and bear children. Girls are thus seen as less valuable than boys and art kept at home to do housework while their brothers are sent to school - the prophecy （预言) becomes self- fulfilling, trapping women in a vicious circle (恶性循环) of neglect.
　　An educated mother, on the other hand, has greater earning abilities outside the home and faces an entirely different set of choices. She is likely to have fewer but healthier children and can insist on the development of all her children, ensuring that her daughters are given a fair chance. The education of her daughters then makes it much more likely that the next generation of girls, as well as of boys, will be educated and healthy.
Few will dispute that educating women has great social benefits. But it has enormous economic advantages as well. Most obviously, there is the direct effect of education on the wages of female workers. Wages rise by 10 to 20 per cent for each additional year of schooling. Such big returns are impressive by the standard of other available investments, but they are just the beginning. Educating women also has a significant impact on health practices, including family planning.
Topic: The significance of female【小题1】       in developing countries