课时作业四十六 SBⅢ Units 7－8
Ⅰ.语音知识 1．radio
A．quality B．Canadian C．rather D．habit 2．declare
A．picnic B．social C．citizen D．accident 3．town
A．bowl B．shown C．brown D．shallow 4．behind
A．include B．ticket C．sick D．online 5．laughter
A．fighter B．tough C．daughter D．weight Ⅱ.补全对话
—We hear so much about exercises these days.So even experts can’t agree on which exercises are best.Now some doctors are strongly encouraging arm exercises.
—Arm exercises？__1__
—__2__They say that arm exercises are a way to become physically healthy. —But don’t arm exercises raise your blood pressure?
—Yes.But the articles I read supply ways to make up for that. —How?
—By adding leg exercises，so that the arms don’t do all the work.__3__ —Sounds right to me.I quite agree with you.__4__
—They mentioned quite a few，but some of the popular ones are cycling with special bicycles that make you use both your arms and legs.
—__5__So I’d like to have a try. —The same with me.
A．So what exercises do the experts suggest?
B．The more leg exercises you do，the better you are.
C．And in turn I’m sure that they’re also a good chance of losing weight. D．Actually that’s not the main reason. E．What’s your opinion about this?
F．Is that because our arms are too fat or soft? G．I can hardly believe it. Ⅲ.单项填空
1．The expert advised the boy，who always fails to remember the new words，to________an effective way of learning vocabulary.
A．admire B．design C．adopt D．invent
2．I wouldn’t speak to him，________trust him and lend him some money. A．let out B．let alone C．leave out D．leave alone
3．—I can hardly wait to see the twins again. —Just have a little________！ A．wait B．time C．patience D．rest
4．The young man is always telling lies；________，he is not a person you can depend on.
A．what’s more B．in other words C．by the way D．on the whole
5．Not wanting to________in his studies，the boy is now working harder than ever before.
A．fall down B．fall behind C．go back D．leave off
6．Generally speaking，the stronger one’s________is，the harder one will work and the greater progress one will make.
A．acquisition B．comprehension C．association D．motivation
7．—Did you enjoy yourself during the winter holiday?
—Not at all.________for the snowstorm，we could have had a much better time. A．Not being B．If it were not C．Had it not been D．Without being
8．—Did you have an English test yesterday?
—Yes.We are now ________to find out the grades we have got. A．anxious B．secure C．appropriate D．willing 9．—But I might fail again，sir.
—Come on，man！If you dare not________risks，you’ll never be able to achieve your goal.
A．appreciate B．take C．avoid D．grasp
10．The soup is perfect，and the steak is marvelous.I’d like to have such a meal again even if it costs________.
A．twice as much B．much as twice C．as twice much D．as much twice
11．The rich only________themselves in making money and had no eye for the needs and welfare of their workers.
A．devoted B．concerned C．enjoyed D．occupied
12．By the time he finishes the part－time job，he________much work experience. A．will gain B．will have gained C．has gained D．had gained
13．—You’re going to have a rise this month，aren’t you? —Yes，only $100. —Well，________.
A．the more，the better B．easier said than done C．better than never D．better than nothing
14．________is often the case，we have worked out the production plan. A．Which B．When C．What D．As
15．—Must I turn off the gas after taking a bath? —Of course.You can never be________careful with that. A．enough B．too C．so D．very Ⅳ.阅读理解
2020·广东惠州第三次调研
A new study suggests that the more teenagers watch television，the more likely they are to develop depression 抑郁
as young adults.But the extent to which TV
may be to blame is a question that the study leaves unanswered.
The researchers used a national long－term survey of adolescent health to investigate the relationship between media use and depression.They based their findings on more than 4,000 adolescents who were not depressed when the survey began in 1995.
As part of the survey，the young people were asked how many hours of television or videos they watched daily.They were also asked how often they played computer games and listened to the radio.
Media use totaled an average of 5 and one－half hours a day.More than 2 hours of that was spent watching TV.
7 years later，in 2002，more than 7 percent of the young people had signs of depression.The average age at that time was 21.
Brian Primack at the University of Pittsburgh medical school was the lead author of the new study.He says every extra hour of television meant an 8 percent increase in the chances of developing signs of depression.
The researchers say they did not find any such relationship with the use of other media such as movies，video games or radio.But the study did find that young men were more likely than young women to develop depression given the same amount of media use.
Doctor Primack says the study did not explore why watching TV causes depression.But one possibility，he says，is that it may take time away from activities that could help prevent depression，like sports and socializing.It might also interfere with sleep，he says，and that could have an influence.
The study was just published in the Archives of General Psychiatry.
In December，the journal Social Indicators Research published a study of activities that help lead to happy lives.Sociologists from the University of Maryland found that people who describe themselves as happy spend less time watching television than unhappy people.The study found that happy people are more likely to be socially active，to read，attend religious services and to vote.
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