D
We can achieve knowledge either actively or passively. We achieve it actively by direct experience, by testing and proving an idea, or by reasoning.
We achieve knowledge passively by being told by someone else. Most of the learning that takes place in the classroom and the kind that happens when we watch TV or read newspapers or magazines is passive. As we are used to passive learning, it’s not surprising that we depend on it in our everyday communication with friends and co-workers.
Unfortunately, passive learning has a serious problem. It makes us tend to accept what we are told even when it is nothing but hearsay and rumor (谣言).
Did you ever play the game Rumor? It begins when one person writes down a message but doesn’t show it to anyone. Then the person whispers it, word for word, to another person. That person, in turn, whispers it to still another, and so on, through all the people playing the game. The last person writes down the message word for word as he or she hears it. Then the two written statements are compared. Typically, the original message has changed.
That’s what happens in daily life. The simple fact that people repeat a story in their own words changes the story. Then, too, most people listen imperfectly. And many enjoy adding their own creative understanding to a story, trying to improve on it, stamping (打上标记) it with their own personal style. Yet those who hear it think they know.
This process is also found among scholars and authors: A statement of opinion by one writer may be re-stated as fact by another, who may in turn be quoted by yet another; and this process may continue, unless it occurs to someone to question the facts on which the original writer based his opinion or to challenge the explanation he placed upon those facts.          
48. According to the passage, passive learning may occur in _______.
A. doing a medical experiment                          B. solving a math problem
C. visiting an exhibition                                D. doing scientific reasoning
49. The author mentions the game Rumor to show that _____.
A. a message may be changed when being passed on
B. a message should be delivered in different ways
C. people may have problems with their sense of hearing
D. people tend not to believe in what they know as rumor
50. What can we infer from the passage?
A. Active learning is less important.
B. Passive learning may not be reliable.
C. Active learning occurs more frequently.
D. Passive learning is not found among scholars.   

It is not unusual to see your desk-mate yawn (打呵欠) as he complains that he didn't have a good sleep the night before. Many teens don't get enough sleep because they have too much homework, which keeps them up at night. Some teens cannot sleep at night even when they want to.

Studies show that during your teenage years, the body's biological clock is reset, telling you to sleep later at night and wake up later in the morning.

But changes in the body clock aren't the only reason teens lose sleep. Lots of people have insomnia (失眠). The most common cause of insomnia is stress. But all sorts of things can lead to insomnia. These include physical discomfort, emotional troubles and even sleeping environment. It's common for everyone to have insomnia from time to time. But if it lasts for a month or more go and see a doctor.

Some people have a condition that causes stomach acid (酸) to move backward towards the chest. This produces the uncomfortable, burning feeling called heartburn. So even if the person doesn't notice the feelings of heartburn because he is sleeping, he may feel tired the next day.

Most teens have nightmares sometimes. But, if they are frequent, a person's sleep pattern can be seriously affected. The most common cause of nightmares is emotional problems, such as stress (压力) or anxiety. If you have them a lot, it's a good idea to talk to a doctor.

Doctors encourage teens to make lifestyle changes to develop good sleeping habits. You probably know that coffee can keep you awake, but did you know that playing video games or watching TV does the same?

1. The main idea of the first paragraph is ________.

A. There is a problem that teenagers can’t get enough sleep.

B. Sleeping problems have different causes.

C. Yawning is a good way to get rid of sleep.

D. Teenagers care too much for homework.

2. The Teenagers’ biological clock ________.

A. easily makes teenagers lead to insomnia

B. is the origin of their insomnia

C. provides them with plenty of time at night

D. is helpful to improve their concentration(注意力)

3. What does the writer say about “nightmares”?

A. It is nothing and shouldn’t be taken seriously.

B. It can release their stress or anxiety.

C. Emotional problems are the only way to form nightmares.

D. People will suffer from sleep if frequent.

4. Which way can help to get rid of insomnia?

A. Drinking some coffee before going to bed.

B. Playing video game or watching TV from time to time.

C. Turning to a doctor for help.

D. Eating much medicine for insomnia.

Should parents ever hit their children?

Research suggests many of us are likely to respond “no”, and public support for spanking(打屁股) has been falling over the years. But surverys also show that 75 percent to nearly 90 percent of parents admit to spanking their child at least once.

I was raised in a zero-tolerance home for disrespect, and my parents often turned to physical punishment. And, no, I don’t feel I was damaged by it.

Nothing is more annoying than watching ill-mannered behavior from children.

But there is data to suggest that a return to old-school spanking isn’t the answer.

Two years ago, Newsweek reported that it had found data suggesting that teens whose parents used physical punishment were more likely to become aggressive.

Murray Straus, professor at the University of New Hampshire in America, has studied the topic of children and spanking for decades. He said that children who were physically punished have lower IQs than their peers(同等的人). It may be that children with lower IQqs were more likely to get spanked, but the punishment may have been counterpoductive(反作用的) to their mental development, as well.

Some researchers make the argument that occasional open-handed smacks(用巴掌打) on the bottom are not only harmless but can have some benefit.

Last year, Marjorie Gunnoe, a psychologist at Calvin College, studied teens who have never spanked. There are a greater number of children growing up without ever having been physi punished. Gunnoe’s research suggests they don’t turn out any better than those who were sometimes spank.

There are some parents who simply cannot control their tempers(脾气). But I still believe that the best parents are the ones who are able to offer fair and firm discipline without ever turning to physical puishment.

1.According to the first three paragraphs, the author was probably hit by her parents when       .

A．they were dissatisfied with her grade    

B．she showed no respect for the elder

C．they cannot control their temper   

D．their discipline turns out to be not strict enough

2.According to Murray Straus, children who are physically punished      .

A．are less aggreesive toward others when they get older

B．have slower physical development

C．benefit from occasional spanking

D．may develop lower IQs than their peer

3.Which of the following statements is TRUE according to the article?

A．40 percent of children grow up without ever being spanked

B．Children who suffer less physical punishment are better students

C．Occasional open-handed spanking on the bottom are mentally harmful

D．Researchers disagree over whether smacking is mentally harmful to children

4.The author seems to agree that       .

A．parents should determine whether a child needs to be smacked or not

B．children who have been spanked tend to behave better than those who haven’t

C．good parents discipline their children in a fair and reasonable way

D．physical punishment should be the last resort of any parent

It is not unusual to see your desk-mate yawn (打呵欠) as he complains that he didn't have a good sleep the night before. Many teens don't get enough sleep because they have too much homework, which keeps them up at night. Some teens cannot sleep at night even when they want to.

Studies show that during your teenage years, the body's biological clock is reset, telling you to sleep later at night and wake up later in the morning.

But changes in the body clock aren't the only reason teens lose sleep. Lots of people have insomnia (失眠). The most common cause of insomnia is stress. But all sorts of things can lead to insomnia. These include physical discomfort, emotional troubles and even sleeping environment. It's common for everyone to have insomnia from time to time. But if it lasts for a month or more go and see a doctor.

Some people have a condition that causes stomach acid (酸) to move backward towards the chest. This produces the uncomfortable, burning feeling called heartburn. So even if the person doesn't notice the feelings of heartburn because he is sleeping, he may feel tired the next day.

Most teens have nightmares sometimes. But, if they are frequent, a person's sleep pattern can be seriously affected. The most common cause of nightmares is emotional problems, such as stress (压力) or anxiety. If you have them a lot, it's a good idea to talk to a doctor.

Doctors encourage teens to make lifestyle changes to develop good sleeping habits. You probably know that coffee can keep you awake, but did you know that playing video games or watching TV does the same?

1.The main idea of the first paragraph is ________.

A. There is a problem that teenagers can’t get enough sleep.

B. Sleeping problems have different causes.

C. Yawning is a good way to get rid of sleep.

D. Teenagers care too much for homework.

2.The Teenagers’ biological clock ________.

A. easily makes teenagers lead to insomnia

B. is the origin of their insomnia

C. provides them with plenty of time at night

D. is helpful to improve their concentration(注意力)

3.What does the writer say about “nightmares”?

A. It is nothing and shouldn’t be taken seriously.

B. It can release their stress or anxiety.

C. Emotional problems are the only way to form nightmares.

D. People will suffer from sleep if frequent.

4.Which way can help to get rid of insomnia?

A. Drinking some coffee before going to bed.

B. Playing video game or watching TV from time to time.

C. Turning to a doctor for help.

D. Eating much medicine for insomnia.

Should parents ever hit their children?

Research suggests many of us are likely to respond “no”, and public support for spanking(打屁股) has been falling over the years. But surverys also show that 75 percent to nearly 90 percent of parents admit to spanking their child at least once.

I was raised in a zero-tolerance home for disrespect, and my parents often turned to physical punishment. And, no, I don’t feel I was damaged by it.

Nothing is more annoying than watching ill-mannered behavior from children.

But there is data to suggest that a return to old-school spanking isn’t the answer.

Two years ago, Newsweek reported that it had found data suggesting that teens whose parents used physical punishment were more likely to become aggressive.

Murray Straus, professor at the University of New Hampshire in America, has studied the topic of children and spanking for decades. He said that children who were physically punished have lower IQs than their peers(同等的人). It may be that children with lower IQqs were more likely to get spanked, but the punishment may have been counterpoductive(反作用的) to their mental development, as well.

Some researchers make the argument that occasional open-handed smacks(用巴掌打) on the bottom are not only harmless but can have some benefit.

Last year, Marjorie Gunnoe, a psychologist at Calvin College, studied teens who have never spanked. There are a greater number of children growing up without ever having been physi punished. Gunnoe’s research suggests they don’t turn out any better than those who were sometimes spank.

There are some parents who simply cannot control their tempers(脾气). But I still believe that the best parents are the ones who are able to offer fair and firm discipline without ever turning to physical puishment.

According to the first three paragraphs, the author was probably hit by her parents when       .

A．they were dissatisfied with her grade    

B．she showed no respect for the elder

C．they cannot control their temper   

D．their discipline turns out to be not strict enough

According to Murray Straus, children who are physically punished      .

A．are less aggreesive toward others when they get older

B．have slower physical development

C．benefit from occasional spanking

D．may develop lower IQs than their peer

Which of the following statements is TRUE according to the article?

A．40 percent of children grow up without ever being spanked

B．Children who suffer less physical punishment are better students

C．Occasional open-handed spanking on the bottom are mentally harmful

D．Researchers disagree over whether smacking is mentally harmful to children

The author seems to agree that       .

A．parents should determine whether a child needs to be smacked or not

B．children who have been spanked tend to behave better than those who haven’t

C．good parents discipline their children in a fair and reasonable way

D．physical punishment should be the last resort of any parent