题目内容

The boy at the back is the only one of the students who _____ from Africa in our school.

A.was B.were C.is D.are

 

C

【解析】

试题分析:句意:后面的男孩是我们学校唯一来自非洲的学生。先行词之前有the only,the very,the等限定词和修饰语时,定语从句的谓语动词用单数形式。根据句子的时态,应该使用一般现在时,所以选C。

考点: 考查主谓一致

 

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Fumbling with the buttons to find a good song while driving has been linked to increased risk of crashes, but is listening to music risky? “It depends on the music,” says a report published in the October issue of Accident Analysis & Prevention.

The study found teenage drivers who played their own music had significantly more traffic violations(违规) compared with background music designed by the researchers to minimize driving distractions, or no music.

Researchers at Ben-Gurion University in Israel recruited(招募) 85 drivers about 18 years old; just over half were male. The subjects were each assigned to drive six challenging road trips that were about 40 minutes long, accompanied by an experienced driving instructor. Music was played on four trips, two with selections from the drivers' playlists, mostly fast-paced vocals, and two with background music, which was a mixture of easy listening, soft rock and light jazz designed to increase driver safety. No music was played on two trips. Subjects rated their mood after each trip and in-car data recorders analyzed driver behavior and errors.

All 85 subjects committed at least three errors in one or more of the six trips; 27 received a warning and 17 required steering or braking by an instructor to prevent an accident. When the music was their own, 98% made errors; without the music, 92% made errors; and while listening to the safe-driving music, 77% made errors. Speeding, following too close, inappropriate lane use, one-handed driving and were the common violations.

The male subjects were more aggressive drivers and made more serious errors than female subjects. The teens played their own music at a very loud volume but significantly decreased the sound level when listening to the safe-driving music, researchers said. Mood ratings were highest on trips with driver-preferred music.

1.What is the key information the author wants to give in Paragraph 1?

A. Many drivers played their favorite music while driving.

B. Drivers shouldn’t search for the buttons to find a good song.

C. Song selection has nothing to do with increased risk of crashes.

D. Listening to certain types of music can increase drivers’ errors.

2.What does the underlined word “ subjects” refer to in this passage?

A. Something being discussed. B. People being written about.

C. People being tested. D. Areas of knowledge or study.

3.In the research, soft rock and light jazz are likely to _______.

A. increase drivers’ safety

B. add to the pleasure of driving

C. change drivers’ idea of safe driving

D. lower drivers’ guard against danger

4.It can be inferred from the passage that in the research ______.

A. the teens committed the most errors

B. the male were more skillful in driving

C. traveling with no music made the least errors

D. driver-preferred music increased the mood ratings

 

Today, as in every other day of the year, more than 3,000 U.S. adolescents will smoke their first cigarette on their way to becoming regular smokers as adults. During their lifetime, it can be expected that of these 3,000 about 23 will be murdered, 30 will die in traffic accidents, and nearly 750 will be killed by a smoking-related disease. The number of deaths due to cigarette smoking outweighs all other factors, whether voluntary or involuntary, as a cause of death.

Since the late 1970s, when daily smoking among high school seniors reached 30 percent, smoking rates among youth have declined. While the decline is impressive, several important issues must be raised.

First, in the past several years, smoking rates among youth have declined very little. Second, in the late 1970s, smoking among male high school seniors beat that among female by nearly 10 percent . The statistic is reversing (完全相反的). Third, several recent studies have indicate high school dropouts have excessively high smoking rates, as much as 75 percent .

Finally, though significant declines in adolescent smoking have occurred in the past decade, no definite reasons for the decline exist. Within this context, the National Cancer Institute (NCI) began its current effort to determine the most effective measures to reduce smoking level among youth.

1.According to the author, the deaths among youth are mainly caused by _____.

A. traffic accidents B. smoking-related disease

C. murder D. all of these

2. Every day there are over _____ high school students who will become regular smoker.

A.75 B.23 C.30 D.3000

3.By "dropout" the author means ________

A. students who failed the examination

B. students who left school

C. students who lost their way

D. students who were driven out of school

4.The reason for declining adolescent smoking is that ________.

A. NCI has taken effective measures

B. smoking is prevented among high school seniors

C. there are many smokers who have died of cancer

D. none of these

5.What is implied by the author is that ________.

A. smoking rates among youth have declined very little

B. there are now more female than male smokers among high school seniors

C. high smoking rates are due to the increase in wealth

D. smoking at high school are from low socio-economic backgrounds

 

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