＿＿can you find out how many chickens there are! A.Counting them B.By counting them C.Only by counting them D.Only have you counted them 题目和参考答案——青夏教育精英家教网—

题目内容

＿＿can you find out how many chickens there are!

A.Counting them

B.By counting them

C.Only by counting them

D.Only have you counted them

解析:

only修饰句子的状语（副词、介词短语、状语从句）位于句首时，句子的主谓部分倒装。

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Recently we told you about a finding that more years of school could help students get higherscores on intelligence tests．That was the finding of a study of teenage males in Norway．Now，other research shows that physical activity may help students do better in their classes .

The research comes as educators in some countries are reducing time for activities like physical education．They are using the time instead for academic subjects like maths and reading．The studies appeared between 2007 and 2013．They included more than 55，000 children，aged 6 to 18．

Amika Singh：“Based on the results of our study，we can conclude that being physically active is beneficial for academic performance. There are，first，Physiological explanations，like more blood flow, and so more oxygen to the brain．Being physically active means there are more hormones(荷尔蒙)produced like endorphins(内啡肽)．And endorphins make your stress level lower and? your mood improved, which means you also perform better.”

Also，students involved in organized sports learn rules and how to follow them．This could improve their classroom behavior and help them keep their mind on their work．

The study leaves some questions unanswered，however．Ms．Stash says it is not possible to say whether the amount or kind of activity affected the level of academic improvement．This is because of differences among the studies .

Also．they were mostly observational studies．An observational study is where researchers do not do controlled comparisons．They only describe what they observe．So they might observe a link that students who are more active often have better grades．But that does not necessarily mean being active was the cause of those higher grades．

The researchers said they found only two high - quality studies．They called for more high-

quality studies to confirm their findings．They also pointed out that “outcomes for other parts of the world may be quite different. ”

Still，the general finding was that physically active kids are more likely to do better in school．Ms．Singh says schools should consider that finding before they cut physical education programs．Her paper on “Physical Activity and Performance at School”is published in the Archives of Pediatric and Adolescent Medicine．

1.The passage mainly tells us that ＿＿＿＿

A．a research on physical education has been done by the researchers

B．there exists a possibility that physical activity leads to higher grades

C．the amount or kind of activity directly affects academic level

D．the research shows that the children aged 6 to 1 8 don't do sports

2.Which of the following is TRUE?

A．Being mentally active is good for academic subjects．

B．The more hormones you have，the more stressed you will get．

C．They have found many high-quality studies to prove the research．

D．The educators in the research think studies，not exercise，mean much to students．

3.The underlined sentence in Paragraph 7 probably means ＿＿＿＿.

A．good marks result from high-quality study

B．findings probably vary in different areas

C．physical activity will spread all over the world

D．academic performance depends on the surroundings

4.What's the purpose of writing the passage?

A．To call our attention to the sports at school．

B．To introduce all types of physical activities．

C．To represent the academic performance．

D．To improve students' health ．

短文改错。

A young father was visiting an old neighbor． They were standing in the old man's garden， and talking about children． The young man said， “How strict should parents be with their children？”

The old man pointed to a string（绳子）between a big strong tree and a thin young one． “Please untie（解开）that string，” he said． The young man untied it， and the young tree bent（弯）over to one side． “Now tie it again， please，” said the old man， “but first pull the string tight so that the young tree is straight again．”

The young man did so． Then the old man said， “There，it is the same with children． You must be strict with them， but sometimes you must untie the string to know how they are getting on． If they are not yet able to stand alone， you must tie the string tight again． But when you find that they are ready to stand alone， you can take the string away．”

1．The story is about ＿＿＿＿＿＿＿．

A． how to take care of young trees　 B． how strict parents should be with their children

C． how the young father should get on with his old neighbor

D． how to tie and untie the string

2．The young man untied the string ＿＿＿＿＿＿＿．

A． in order to throw it away　　　　　 B． so that both of the trees would grow straight

C． only to find that the thinner one bent over to one side

D． in order to let the old man teach him

3．When can the string be taken away？＿＿＿＿＿＿＿．

A． When the old man has left　　　　　　　　 B． After you have untied it

C． When the young man has untied it next time

D． When the young tree grows strong enough

4．At last the old man told the young man ＿＿＿＿＿＿＿．

A． that he should be strict with his children if they could not yet stand alone

B． that he should always be strict with his children　　 C． that he should be hard on them

D． that he should tie his children until they are ready to stand alone

5．In the story the relation（关系） of the big strong tree to the thin one is like that of ＿＿.

A． the young father to the old neighbor　　　　　　　

　B． parents to their children

C． the old neighbor to the children of the young father　　

D． grown ups to their parents