性强烈的欧美三级视频,黄色国产免费观看

70．What can we learn from this study? A．The study is carried out by the students at Auburn University, Alabama. B．While planning new neighborhoods, developers often cut down the trees there. C．Houses with trees on the east side of their house had a lower power bill. D．The study will prevent developers and builders from planning more trees. We often don' t give importance to minor things thinking they won' t matter. But at times, some things look very minor but their result can be really powerful. Here are some of the efforts which can change the relationship between parents and children. Pat your child when he loses:May it be failure in the class, or on the field, speak words of encouragement to your child. The trust and confidence in your relationship will go to another level. After all, words of encouragement during failure are more valuable than words of praise after success. Give him importance, like a member of the family:Hang his painting in your room or in the office, take his opinion when you are buying furniture for the house. Your child will believe in himself and be a winner throughout. Share your own experience when your child makes a mistake:When you see your child lying or stealing, share with him the mistakes you made in your life. He' 11 know it is all right to make mistakes and that he can share with you anything. Appreciate at least one quality in your child every day:Each day look at what qualities your child possesses and appreciate him, maybe for his caring attitude, his dance skills or his observation power. Tell him how proud you are of him because of those qualities. Become his age before bedtime:Jump on the bed, have pillow fights, act silly, dance―become a child with your child for sometime. You' 11 forget all your day's stress. Try these minor things; you' 11 see the love deepen and the relationship blossom. 【查看更多】

A recent report on online education, made by SRI International for the Department of Education, has a serious academic (學(xué)術(shù)的) title, but a most interesting conclusion: “ Students in online learning conditions performed better than those receiving face-to-face instruction.”

The report examined the research on online and traditional classroom teaching from 1996 to 2008. Some of it was in K-12 settings, but most of the studies were in colleges and adult continuing education programs.

Over the 12 years, the report found 99 studies in which there were comparisons of online and classroom performance for the same courses. The result of the Department of Education’ s research showed that usually, students doing some or all of the course online would rank a little higher than the classroom students with little but meaningful difference.

“The importance of the study lies in showing that online learning today is not just better than nothing — it actually tends to be better than traditional instruction.” said Barbara Means, the study’ s lead author and an educational psychologist at SRI International.

This hardly means that we’ll be saying goodbye to classrooms. But the report does suggest that online education could be set to develop sharply over the next few years.

Until fairly recently, online education totaled to little. That has really changed with the arrival of webbased video, instant (即時(shí)的) messaging and teamwork tools.

The real promise of online education, experts say, is providing learning experiences that are more suitable for individual (個(gè)體的) students than is possible in classrooms. That allows more “l(fā)earning by doing,” which many students find more attractive and useful.

“We are at a turning point in online education,” said Philip R. Regier, the leader of Arizona State University’ s Online and Extended Campus program.

The biggest near-term growth, Mr. Regier predicts, will be in continuing education programs.

1.What do we know from the passage?

A．Most of the studies were done in high schools.

B．The report was based on more than 100 studies.

C．The studies were carried out for more than 20 years.

D．The difference between online and traditional teaching is not big.

2.We can learn from the passage that __________.

A．traditional education will come to an end

B．traditional education is not popular any longer

C．online education didn’ t develop rapidly until recently

D．middle schools are facing the choice between online and traditional teaching

3.Which is NOT the reason why many students prefer online learning?

A．Online teaching is more suitable for individuals.

B．Classroom teaching is not practical and useful.

C．Students can learn by doing in online courses.

D．Online teaching is more interesting.

4.Which do you think is the best title for the passage?

A．Study finds that online education beats the classroom

B．Why is online education on the rise?

C．A report on online education

D．Classroom teaching is out

查看答案和解析>>

閱讀理解

　　South African surgeons have carried out the world’s first organ transplant(移植)from one HIV-positive person to another, in a groundbreaking operation that opens the way to saving thousands of lives．The South African government previously hadn’t allowed HIV-positive people to receive transplants or to donate organs-a policy criticized by some people in the medical establishment of a country where one in five adults is HIV-positive．

　　But the policy was ended last year, opening the way for more operations, and possibly giving HIV-positive patients a greater chance of receiving new kidneys(腎臟)than those not infected(感染)with the Aids virus, because there are more potential donors．(捐贈(zèng)者)

　　"HIV patients are at a disadvantage when it comes to getting an organ and dialysis(透析)．Even when we try to be fair, they are at a disadvantage competing with people with no chronic illness," she said．"This study opens up an opportunity to help them, even gives them a slight advantage, because of the high number of HIV-positive donors．"

　　According to Miller, if the kidney transplants were successful in the long term it would open the way to the use of other organs such as livers, which are particularly vulnerable because anti – AIDS drugs can easily damage them．

　　However, the transplants remain controversial(有爭議的)because they almost certainly mean that the recipient will become infected with the virus strain that infected the donor, which may be different from the one they carry and increase their resistance(抵抗)to anti-Aids drugs．

　　There are also concerns that HIV-positive organs could themselves have been damaged by the disease, making them less durable as transplants．

　　But news of the transplants has brought new hope to many．Dr June Fabian, a consultant nephrologist at Johannesburg hospital, said some of her HIV-positive patients stood to benefit from accepting HIV-positive organs．

(1)

What is the passage mainly about?
[　　]
A．	The disadvantaged HIV-positive patients in South Africa．
B．	The world’s concern for patients with AIDS in South Africa．
C．	The world’s first heart transplant in South African．
D．	The world’s first kidney transplant is between HIV-positive patients．

(2)

From Paragraph 2 and 3 we learn that ________．
[　　]
A．	research on AIDS treatments is making progress in South Africa
B．	HIV-positive patients are ignored in South Africa by the government
C．	the status of HIV－positive patients in South Africa is better now
D．	HIV－positive organ transplants are forbidden in South Africa

(3)

The underlined word “vulnerable” in Paragraph 5 is closest in meaning to ________．
[　　]
A．	sensitive
B．	weak
C．	lasting
D．	narrow

(4)

Which of the following statements is TRUE according to the passage?
[　　]
A．	There are an increasing number of HIV – positive patients in South Africa．
B．	Organ transplants may increase the patients’ resistance to anti-AUDS drugs,
C．	The successful organ transplant is helpful for the treatment of AIDS．
D．	HIV-negative people will have a greater chance of receiving new kidneys in South Africa．

查看答案和解析>>

American researchers found females are the more talkative sex because of a special “l(fā)anguage protein(蛋白質(zhì))” in the brain.
The study, conducted by neuroscientists （神經(jīng)學(xué)家）and psychologist from the University of Maryland, concluded that women talked more because they had more of the Foxp2 protein. The research, published in the Journal of Neuroscience, found that higher levels were found among humans that were women but in rats that were males. Their findings came after it was previously claimed that ladies speak about 20,000 words a day – over 13,000 more than men. "This study is one of the first to report a sex difference in the expression of a language-associated protein in humans or animals,” said Prof Margaret McCarthy, who led the study. In their study, the researchers attempted to determine what might make male rats more vocal than their female friends.
They separated four-day-old rats from their mothers and then counted the number of times they cried out in the “ultrasonic range”, the frequencies higher than humans can hear, over five minutes. While both sexes called out hundreds of cries, the males called out twice as often, they found. But when the pups were returned to their mother’s cage, she fussed over her sons first. Tests conducted on the parts of the brain known to be associated with vocalcalls showed the male pups have up to twice as much Foxp2 protein as the females. The researchers then increased the production in the brains of female pups and reduced it in males. This led to the female rats crying out more often and their mothers showing more interest to them. In contrast, males became less “talkative”.
The researchers then tested samples from ten children, aged between three and five, which showed that females had up to 30 per cent more of the Foxp2 protein than males, in a brain area key to language in humans.
“Based on our observations, we assume higher levels of Foxp2 in girls and higher levels of Foxp2 in male rats is an indication that Foxp2 protein levels are associated with the more communicative sex,” said Prof McCarthy.
"Our results imply Foxp2 as a component of the neurobiological basis of sex differences in vocal communication in mammals."
【小題1】From the second paragraph, we can learn that ________.

A．women always speak more words than men

B．men and male rats have low levels of language protein

C．women and male rats have similar levels of Foxp2

D．McCarthy isn’t the first to find females more talkative

【小題2】The underlined phrase “fussed over” in the third paragraph probably means______.

A．paid attention to

B．related to

C．put pressure on

D．counted on

【小題3】The researchers carried out the experiments on rats in order to _______.

A．test which part of the brain is key to language in rats and humans

B．prove the levels of Foxp2 protein in humans and rats are different

C．determine the reason why female rats are more talkative than male rats

D．discover the association between Foxp2protein and vocal communication

【小題4】Which of the following can be the best title for the passage ?

A．Tests on humans and rats	B．Why women are the talkative sex
C．Sex differences in Foxp2 protein	D．Foxp2 protein determines oral ability

查看答案和解析>>

American researchers found females are the more talkative sex because of a special “l(fā)anguage protein(蛋白質(zhì))” in the brain.

The study, conducted by neuroscientists （神經(jīng)學(xué)家）and psychologist from the University of Maryland, concluded that women talked more because they had more of the Foxp2 protein. The research, published in the Journal of Neuroscience, found that higher levels were found among humans that were women but in rats that were males. Their findings came after it was previously claimed that ladies speak about 20,000 words a day – over 13,000 more than men. “This study is one of the first to report a sex difference in the expression of a language-associated protein in humans or animals,” said Prof Margaret McCarthy, who led the study. In their study, the researchers attempted to determine what might make male rats more vocal than their female friends.

They separated four-day-old rats from their mothers and then counted the number of times they cried out in the “ultrasonic range”, the frequencies higher than humans can hear, over five minutes. While both sexes called out hundreds of cries, the males called out twice as often, they found. But when the pups were returned to their mother’s cage, she fussed over her sons first. Tests conducted on the parts of the brain known to be associated with vocalcalls showed the male pups have up to twice as much Foxp2 protein as the females. The researchers then increased the production in the brains of female pups and reduced it in males. This led to the female rats crying out more often and their mothers showing more interest to them. In contrast, males became less “talkative”.

The researchers then tested samples from ten children, aged between three and five, which showed that females had up to 30 per cent more of the Foxp2 protein than males, in a brain area key to language in humans.

“Based on our observations, we assume higher levels of Foxp2 in girls and higher levels of Foxp2 in male rats is an indication that Foxp2 protein levels are associated with the more communicative sex,” said Prof McCarthy.

“Our results imply Foxp2 as a component of the neurobiological basis of sex differences in vocal communication in mammals. ”

1.From the second paragraph, we can learn that ________.

A．women always speak more words than men

B．men and male rats have low levels of language protein

C．women and male rats have similar levels of Foxp2

D．McCarthy isn’t the first to find females more talkative

2.The underlined phrase “fussed over” in the third paragraph probably means______.

A．paid attention to B．related to C．put pressure on D．counted on

3.The researchers carried out the experiments on rats in order to _______.

A．test which part of the brain is key to language in rats and humans

B．prove the levels of Foxp2 protein in humans and rats are different

C．determine the reason why female rats are more talkative than male rats

D．discover the association between Foxp2protein and vocal communication

4.Which of the following can be the best title for the passage ?

A．Tests on humans and rats

B．Why women are the talkative sex

C．Sex differences in Foxp2 protein

D．Foxp2 protein determines oral ability

查看答案和解析>>

American researchers found females are the more talkative sex because of a special “l(fā)anguage protein(蛋白質(zhì))” in the brain.

The study, conducted by neuroscientists （神經(jīng)學(xué)家）and psychologist from the University of Maryland, concluded that women talked more because they had more of the Foxp2 protein. The research, published in the Journal of Neuroscience, found that higher levels were found among humans that were women but in rats that were males. Their findings came after it was previously claimed that ladies speak about 20,000 words a day – over 13,000 more than men. "This study is one of the first to report a sex difference in the expression of a language-associated protein in humans or animals,” said Prof Margaret McCarthy, who led the study. In their study, the researchers attempted to determine what might make male rats more vocal than their female friends.

They separated four-day-old rats from their mothers and then counted the number of times they cried out in the “ultrasonic range”, the frequencies higher than humans can hear, over five minutes. While both sexes called out hundreds of cries, the males called out twice as often, they found. But when the pups were returned to their mother’s cage, she fussed over her sons first. Tests conducted on the parts of the brain known to be associated with vocalcalls showed the male pups have up to twice as much Foxp2 protein as the females. The researchers then increased the production in the brains of female pups and reduced it in males. This led to the female rats crying out more often and their mothers showing more interest to them. In contrast, males became less “talkative”.

The researchers then tested samples from ten children, aged between three and five, which showed that females had up to 30 per cent more of the Foxp2 protein than males, in a brain area key to language in humans.

“Based on our observations, we assume higher levels of Foxp2 in girls and higher levels of Foxp2 in male rats is an indication that Foxp2 protein levels are associated with the more communicative sex,” said Prof McCarthy.

"Our results imply Foxp2 as a component of the neurobiological basis of sex differences in vocal communication in mammals."