15. In the last paragraph, “that’s just the way the ball bounces” probably means _______.
   A. tradition offers the best choice
   B. the NBA made a mistake
   C. the ball bounces as best it can
   D. the ball bounces perfectly

Questions 16—20 are based on the following passage:

    A mother dolphin (海豚) chats with her baby over the telephone! They were in separate tanks connected by a special underwater audio link. “It seemed clear that they knew who they were talking with,” says Don White, whose Project Delphis ran the experiment. But what were they saying?

    Scientists think dolphins “talk” about everything from basic facts like their age to their emotional state. “I speculate that they say things like ‘there are some good fish over here,’ or ‘watch out for that shark because he’s hunting,’” says Denis Herzing, who studies dolphins in the Bahamas.

    Deciphering (譯解) “dolphin speak” is also tricky because their language is so dependent on what they’re doing, whether they’re playing, fighting, or going after tasty fish. During fights, for example, dolphins clap (碰撞) their jaws to say “Back off!” But their jaws clap while playing, too, as if to show who’s king of the underwater playground.

16. How did the mother dolphin talk with her baby over the telephone?
   A. Two connected tanks were separated for the talk.
   B. A clear voice could be heard in the two separate tanks.
   C. Both the mother dolphin and the baby knew each other.
   D. AS special underwater audio link was sep up for the talk

17. Dolphins seem to talk to each other about any of the following EXCEPT ______.
   A. their age                         B. audio link
   C. food sources                      D. their emotional state

18. Why is it challenging to interpret “dolphin speak”?
   A. Because playing and fighting are part of dolphins’ life.
   B. Because dolphins like to talk about their language.
   C. Because dolphins’ language heavily relies on their actions.
   D. Because tasty fish are difficult for dolphins to catch.

19. A dolphin might be saying “________” when it claps its jaws.
   A. Go back to your home!               B. I am the king here!
   C. Who is playing here?                 D. Show me who the king is!

20. When scientists describe dolphins’ communicative skills, their tone is rather ________.
   A. affirmative                         B. negative
   C. playful                            D. speculative

Questions 21—25 are based on the following passage:

    An American company has started testing a new program aimed at increasing security. Three workers from CityWatcher.com, a company that provides security camera equipment, have volunteered to be electronically monitored. They will have a silicon chip put inside their arms. The tiny device is the size of a grain of rice and will send out radio signals. These will provide information to a central monitoring system that will give the workers access to secure areas of the workplace. The chips were originally designed for medical purposes.

    Sean Darks, CEO of CityWatcher, said the chips were like identity cards. He said the only difference is that they are inserted inside the person’s body. He added they are very different from Global Positioning Satellite technology, which allows people’s location to be monitored. Mr. Darks insisted that they were not dangerous and even decided to have a chip implanted in his own body. However, many people are worried about the issue of privacy. Many believe the technology could be abused and that new laws will have to be made. Mr. Darks said his workers always choose to have the chips removed.

21. This passage is mainly about _______.
   A. the test of a new security program
   B. the increasing security of U.S. companies
   C. a new central monitoring system
   D. Global Positioning Satellite technology

22. The three workers from CityWatcher. Com have _______.
   A. volunteered to provide security camera equipment
   B. offered to be monitored in the new security program
   C. agreed to have silicon chips planted in their brain
   D. had access to secure areas of their workplace

23. Which of the following is NOT true about the silicon chips in trial?
   A. They are as tiny as a grain of rice.
   B. They will send out radio signals.
   C. They will be developed for medical uses.
   D. They function like identity cards.

24. The chips are different from the Global Positioning Satellite technology in that _______.
   A. they allow people’s location to be monitored
   B. they are inserted into a person’s body as ID cards
   C. they provide information to a central monitoring system
   D. they bring more danger to the carriers

25. Many people are worried about the silicon chips because _________.
   A. the new technology may introduce on people’s privacy
   B. they cannot get the implanted chips removed
   C. the new laws about the technology might be abused
   D. they are not assured of the effect of the chips

Questions 26-30 are based on the flossing listing:

26. The above listing is most probably __________.
   A. an advertisement placed by an airline company
   B. a notice placed by an international air committee
   C. a ticketing message provided by a hotline company
   D. an information board provided by a travel agency