问题 填空题

流操作子______可跳过输入流中的前导空白字符。

答案

参考答案:ws

阅读理解

“At three or four in the morning and I surf the net.”

“I often check my e-mail forty times a day.”

“I often spend more than three hours during one time on the net.”

“I spend more time in chat rooms than with my ‘real-1ife’ friends.”

Do you know any people like these? They are part of a new addiction(瘾)called Internet addiction. Internet addicts spend at least thirty to forty hours online every week. The use of the Internet can be an addiction like drug(毒品) use. People lose control of the time they spend on the Internet. For example, one college student was missing for several days. His friends were worried, and they called the police. The police found the student in the computer lab: he was surfing the net for several days straight.

Studies show that about 6 to 10% of Internet users become addicted. And people worry about the teens because the Internet is changing the playing field for some of them. They spend more time in cyberspace than in the real world of friends and family.

Is “surfing the net” a hobby or an addiction for you? You may have a problem if you have these symptoms(症状):

●You do not go to important family activities or you do not do school work because you like to spend hours on the Internet.

●You can’t wait for your next online time.

●You plan to spend a short time online, but then you spend several hours.

●You go out with your friends less and less.

小题1:What does the beginning of the passage tell us?

A.How to become an Internet addict.

B.What an Internet addict usually does.

C.Where to find an Internet addict.

D.Why to write this passage.小题2:How does the writer describe the addicts “use of Internet”?

A.It is something like keeping drugs.

B.It is a way of producing drugs.

C.It is like taking drugs.

D.It is terrible to imagine.小题3:Why do people worry about the teens?

A.The teens are wasting too much money.

B.They used to work on the Internet.

C.The playing field of the teens will disappear.

D.More and more of the teens wil1 become addicted to the Internet.小题4:The example of one college student in the passage shows that _______.

A.Internet problems are more serious among college students

B.Internet addicts usually stay in the computer lab without sleep

C.Some of the Internet users have already been seriously addicted

D.The police often help to find those Internet addicts.小题5:What is the writer trying to tell us at the end of the passage?

A.Don’t be addicted to the Internet.

B.Go to family activities more often.

C.Do things as you have planned.

D.Stay with your parents as often as possible.

单项选择题

Should we care if over 150 known species of animals have (91) from the earth in the last fifty years Should we be concerned that there are (92) thousands of species whose very existence is (93) endangered—largely because of our activities (94) , after all, is the natural end of populations. Species are born, then (95) , and then die. Some live a (96) time, perhaps millions of years; some die more quickly. We have (97) the extinction of many species we know about, and we have undoubtedly sealed the (98) of others. In fact, there are undoubtedly many other species that have lived among us during our time on earth, but that have disappeared as a (n) (99) of our activities without our ever having known they existed.
It is hard to explain the rationale of many of us who are concerned about such matters. I have never seen a sea whale, (100) I don’t want them to become extinct. Moreover, I felt this way long before I understood anything about how they might be an important part of an ecosystem. Possibly such feelings merely reflect the cultural attitude that it is "nice" to wish other living things well; thus, the attitude is (101) . I feel nice.
There are, of course, more rational reasons for (102) the extermination of any species. For one thing, the kind of attitude that encourages or sanctions the destruction of other species is a threat (103) our own wellbeing. If such an attitude exists, we ourselves might (104) victim to it. living things (including us) might be expected to fare better where there is (105) for life. The extinction of other species could also threaten us (106) by simplifying the system of which we are a part or by destroying parts of the ecosystem (107) which we directly rely. For example, if we continue to poison the oceans (108) we are willing to believe only a few bottom dwellers are affected, we might (109) overstep some critical threshold and trigger the wholesale death of plankton, thus finding ourselves without a major (110) of the world’s food and with our oxygen supplies dwindling.

A.disappeared

B.died

C.endangered

D.ceased