--Why do you look so upset, Linda?

--There are so many troublesome problems____.

A. remaining settled B. remaining to be settled

C. remained to settle D. remained to be settled

The old man, for life had been very hard, donated his possessions to poor villages in Anhui.

A. whose B. whom

C. which D. that

But for the fact that I an unexpected visitor, I _____to the lecture.

A. had had/would go

B. had/must go

C. had/would have gone

D. had had/must have gone

The man has been in____ doctors describe as a vegetative(植物的) state for six years.

A. what B. which

C. that D. how

--When shall we start the reconstruction of the old buildings?

--Not until by the local government.

A. will our program be approved

B. our program will be approved

C. has our program been approved

D. our program has been approved

I told them not everybody could pass the test, ____?

A. could he B. didn’t I

C. didn’t you D. could they

She couldn’t find her son she had dropped him off.

A. when B. until

C. although D. where

--Did you like your trip to Xi’an during the Summer vacation?

--____. It was too hot and there was too much traffic.

A. Not a little B. Don’t mention it

C. Not really D. Not exactly

With time flying, people become aged. Then many people even in their middle age often start to notice that their memory and mental clarity are not what they used to be. We suddenly can’t remember we put the keys just a moment ago, or an old friend’s name, or the name of an old band we used to love. As the brain , we refer to these occurrences as "senior moments". seemingly innocent, this loss of mental focus can potentially have a(n) effect on our social and well-being.

Neuroscientists,experts who study the nervous system, are increasingly showing that there’s actually a lot that can be done. It out that the brain needs exercise in much the same way our muscles do, and the right mental can significantly improve our basic cognitive(认知) . Thinking is basically a of making connections in the brain. To a certain extent, our ability to in making the connections that drive intelligence is inherited(继承). , because these connections are made through effort and practice, scientists believe that intelligence can expand and wave mental effort.

Now, a new Web-based company has taken a step and developed the first "brain training program" designed to actually help people improve and their mental sharpness.

The Web-based program you to systematically improve your memory and attention skills. The program keeps a(n) of your progress and provides detailed feedback(反馈) your performance and improvement. Most importantly, it changes and improves the games you play to up the strengths you are developing-much like a(n) exercise routine which requires you to increase resistance and vary your muscle use.

1.A. where B. when C. that D. why

2.A. improves B. fades C. recovers D. falls

3.A. If B. Unless C. Once D. While

4.A. irregular B. limited C. damaging D. positive

5.A. personal B. psychological C. mental D. physical

6.A. turns B. finds C. points D. figures

7.A. connection B. responses C. workouts D. associations

8.A. style B. functions C. circumstances D. atmosphere

9.A. steps B. condition C. consequences D. process

10.A. insist B. believe C. succeed D. fail

11.A. Therefore B. Moreover C. Otherwise D. However

12.A. according to B. regardless of C. apart from D. instead of

13.A. back B. further C. aside D. around

14.A. regain B. reflect C. review D. respond

15.A. suggests B. makes C. hurries D. allows

16.A. hold B. record C. order D. pace

17.A. to B. with C. for D. about

18.A. irregularly B. habitually C. constantly D. unusually

19.A. carry B. put C. build D. take

20.A. risky B. effective C. meaningless D. familiar

Though the Web is becoming increasingly popular, the TV never fails to attract people. Do you know which television network is the largest in America? It is not ABC, CBS, or Fox. Nor is it one of the cable net-works such as CNN, which carries only news and news stories. It is not ESPN, the all-sports cable net-work, or even MTV, which is famous for its music videos. Rather it is PBS, Public Broadcasting System, a non-profit public broadcasting TV service. PBS has 349 member television stations in the U. S. and some member stations by cable in Canada.

PBS only attracts a minority of all TV viewers, about 2 percent. The industry leader, NBC, however, attracts 11 percent of viewers. But the growth of public television in the past two decades has been dramatic. This is especially noteworthy(值得关注) when one considers that public television stations must often survive on very limited budgets, on viewers’ donations, and on private foundations and some governmental funding.

The level of quality of PBS programs, whether in national and international news, entertainment, or education, is excellent. Almost a whole generation of children throughout the world is familiar with Sesame Street and the characters of The Muppet Show. PBS is especially well known for the quality of its many educational TV programs. Over 95 percent of all public television stations have tele-courses. These courses are accepted and supported by more than 1, 800 colleges and universities throughout the US. Each year, over a quarter of a million students take courses this way.

1.According to this article, PBS received part of its funding from___.

A. the audience

B. public schools

C. advertising agencies

D. other television stations

2.What is PBS most famous for?

A. Cable services.

B. Generous donations.

C. Tele-courses.

D. Live news broadcasts.

3.Which of the following is TRUE about public television stations?

A. The majority of their viewers are minority people.

B. Ninety-five percent of their programs are tele-courses.

C. They are shrinking in number because they make no profits.

D. Their courses are accepted by many universities in America.

4.Which of the following has the highest percentage of viewers?

A. ABC B. PBS

C. NBC D. Fox