题目内容

Higher temperatures turning the large ice sheet to water would cause ________ rise in sea levels worldwide and change ________ weather on earth.

[　　]

A．a; the
B．the; 不填
C．a; 不填
D．不填; the
答案：A
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A recent study offers a picture of how dangerous it is to get a lift from a teenage driver. Indeed, a 16-year-old driver with three or more passengers is three times as likely to have a fatal accident as a teenager driving alone. However, the possibility of death for drivers between 30 and 59 decreases with each additional passenger.

It was also found that the death rates for teenage drivers increased greatly after10 p.m , and especially after midnight. With passengers in the car, the driver was even more likely to die in a late night accident.

Robert Foss, a scientist at the University of North Carolina Highway Safety Research Center, says the higher death rates for teenage drivers have less to do with "really stupid behavior" than with just a lack of driving experience. Both he and the author of the study believe that the way to help solve the problem is to have states setting up so-called graduated licensing systems (等级执照制). A graduated license requires that a teenager first prove himself able to drive in the presence of an adult, fol­lowed by a period of driving with a limited number of passengers, before graduating to full driving on his own. About half of the states now have some sort of graduated licensing system in place. The systems have reduced teenage driver crashes, according to recent studies.

1．Which of the following situations is most dangerous according to the passage?

    A．Adults giving a lift to teenagers on the highway after 10 p.m.

    B．A teenager driving after midnight with passengers in the car.

    C．Adults driving with three or more teenage passengers late at night.

    D．A teenager getting a lift from a stranger on the highway at midnight.

2．According to Robert Foss, the high death rate of teenage drivers is mainly due to _______.

    A．their frequent driving at night             B．their improper way of driving

    C．their lack of driving experience           D．their driving with passengers

3．A suggested measure to be taken to reduce teenagers' driving accidents is that ________.

    A．driving in the presence of an adult should be made a rule .

    B．they should be stopped from taking on passengers

    C．they should not be allowed to drive after 10 p. m.

    D．the licensing system should be improved

4．The present situation in about half of the states is that the graduated licensing sys­tem

_________.

    A．is under discussion                 B．is about to be set up

       C．has been put into effect             D．has been perfected

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