His face suggests that he looks worried .He insists he is a

The ______ look on his face suggests that his ______ report failed the test.

A．disappointing; disappointment

B．disappointment; disappointed

C．disappointed; disappointing

D．disappointing; disappointed

—My uncle suggests I ________ abroad.
—I would rather you ________ at home.

A．go; stay

B．went; stayed

C．go; stayed

D．went; stay

The article suggests that when a person _________ under unusual stress he should be especially careful to have a well-balanced diet.

A．is

B．were

C．be

D．was 

b
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 or may not 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 four thousand 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 five and one-half hours a day. more than two hours of that was spent watching tv.
seven years later, in 2002, more than seven percent of the young people had signs of depression. their average age at that time was twenty-one.
brian primack at the universtiy of pittsburgh medical school was the leading author of the new study . he said every extra hour of television meant an eight 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 if watching tv causes depression . but one possibility, 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, to attend religious services and to vote.
60．the average age of the depressed young people should be_______when they began to receive the survey.
a．21 b．15 c．14 d．20
61．according to the passage, which of the following can possibly lead to depression?
a．swimming b．attending a ***
c．attending religious services d．watching tv for a long time.
62．we can learn from the passage_______.
a．the survey lasted a short time
b．over 280 teenagers who received the survey became more or less depressed in 2002
c．men are more likely to become depressed than women
d．the study about the relationship between media use and depression was published in the journal social indicators research
63．what is the best title for the passage?
a．teens, television, depression
b．depression—the common problem of teens
c．problems of watching tv
d．teens—a group enjoying watching tv

Research suggests that a newly-identified gene known as insomniacs(失眠症患者) may play a role in keeping us asleep. By cloning and testing this gene in about 21,000 fruit flies, Rockefeller University researchers say they have discovered an entirely new mechanism (机制) by which sleep is controlled.
By studying these flies, the researchers discovered that mutations(变异) in the insomniac gene were associated with a great reduction in sleep. While a typical fruit fly slept for an average of 927 minutes a day, the mutant flies slept for just 317. They also slept for shorter periods of time, and slept and woke more frequently.
“The results showed a great loss of both the time that the flies’ sleep lasted and their ability to remain asleep after they slept,” says researcher Nicholas Stavropoulos.
The researchers also examined the link between sleep and lifespan, finding that flies with mutations to the insomniac gene lived only about two-thirds as long as unchanged flies. But when the scientists removed insomniac only in neurons （神经细胞）---allowing it to remain in the rest of the flies’ bodies---this difference disappeared; the resulting animals slept poorly but lived just as long.
“This suggests that reduced sleep can be ‘uncoupled’(分开) from reduced lifespan, supporting the idea that some interruptions of sleep do not affect overall health, at least as far as lifespan is concerned,” Stavropoulos says.
Although flies and humans would appear to have little in common when it comes to lifestyle, scientists say that the mechanisms of sleep and wakefulness are likely to be quite similar.
“Sleep is a fundamental behavior in all animals, and it is poorly understood from a scientific standpoint, says Stavropoulos. This work could prove useful in understanding and treating sleep disorders”
小题1:The text is mainly about____.

A．the progress in cloning fruit flies

B．the methods of cloning fruit flies

C．the link between gene and lifespan

D．the influence of a gene on the ability to sleep

小题2:According to paragraph2, the mutant flies________.

A．slept about 5 hours a day

B．had problems waking up

C．didn’t seem sleepy at all

D．could not fall asleep

小题3:We can conclude from the text that________.

A．sleep and health go hand in hand

B．sleep can be controlled by humans

C．research into sleep is very fruitful

D．the findings are useful in medical treatment