—Do you know that girl, Peter? —______,

China's first spaceman, Yang Liwei, with Shenzhou V ______successfully to earth on Thursday morning after more than 21 hours’ travel along the earth's orbit.          [ ]

A. returned back    

B. arrived    

C. reached    

D. returned

审计方法是指审计人员检查和分析审计对象，收集（），并对照审计依据，形成审计结论和意见的各种手段的总称。

随着市场经济的发展，供给的瓶颈基本解除，市场的短板由产品短缺转向内需不足，仍将企业优先作为地方行政和社会发展的共识，无疑会加剧当前的矛盾。但是长期对企业尤其大型企业的保护、优待甚至纵容，已经表现出带有某种关涉“政治正确性”的惯性，致使一些企业越来越能够“视利润如生命，视生命如草芥”。这种发展理念不作改变，没有足够密度的消费者权益保护来对抗日益横暴的企业权力，中国经济的未来受制于内需的局面将越演越烈。 文段划横线处的“这种发展理念”是指( )。

A．企业“视利润如生命，视生命如草芥”的观念

B．长期对企业尤其是大型企业的保护、优待、纵容

C．地方政府对某些企业施与“政治正确性”的惯性

D．企业优先成为地方行政和社会发展的共识

Homework can put you in a bad mood (心情), and that might actually be a good thing. Researchers from the University of Plymouth in England doubted whether mood might affect the way kids learn. To find out the answer, they did two experiments with children.

The first experiment tested 30 kids. Some shapes (图片) were hidden inside a different, larger picture. The kids had to find the small shapes while sitting in a room with either cheerful or sad music playing in the background. To test their mood, the scientists asked the kids to point to one of five faces, from happy to sad. Children who listened to cheerful music tended to point to the smiley faces while the others pointed to the unhappy ones. The researchers found that sad kids took at least a second less to find the small shapes. They also found an average of three or four more shapes.

In the second experiment, 61 children watched one of two scenes from a film. One scene was happy, and the other was sad. Just like in the first experiment, kids who saw the sad scene acted better compared to the others.

The researchers guessed that feeling down makes people more likely to focus on a problem or difficult situation. Not all scientists agree with them, however. Other studies argued that maybe, that cheerful music in the first experiment distracted (使分心) kids from finding shapes.

While scientists work on finding out the answers, it still might be wise to choose when to do your tasks according to your mood. After eating a delicious ice cream, for example, write an essay.

小题1:Researchers did experiments on kids in order to find out ______.

A．how they really feel when they are learning

B．whether mood affects their learning ability

C．what methods are easy for kids to learn

D．the relationship between sadness and happiness小题2:The researchers found in the first experiment that ______.

A．kids who listened to happy music turned out to be energetic

B．kids who listened to sad music liked to choose smiley faces

C．kids worked harder in the background of happy music

D．sad music helped kids find out small shapes quickly小题3:What can we learn from the text?

A．The researchers will continue to do experiments.

B．The researchers have found a clear answer.

C．The experiments are popular among kids.

D．Kids change their feelings more easily.小题4:We can infer that the text is ______.   

A．a science survey

B．a research report

C．a school project

D．an introduction to an experiment

构成细胞骨架的主要化学成分是（）

A.磷脂

B.核酸

C.糖类

D.蛋白质

E.胆固醇