所有灰饼的厚度最厚不宜超过______mm。A．27 B．25 C．28 D．26

Some students get so nervous before a test, they do poorly even if they know the material. Sian Beilock, a psychology professor at the University of Chicago in Illinois, has studied these highly anxious test-takers.

Sian Beilock says: “They start worrying about the consequences. They might even start worrying about whether this exam is going to prevent them from getting into the college they want. And when they worry, it actually uses up attention and memory resources. I talk about them as their cognitive(认知的)horsepower that they could otherwise be using to focus on the exam.”

Professor Beilock and another researcher, Gerardo Ramirez, have developed a possible solution. Just before an exam, highly anxious test-takers spend ten minutes writing about their worries about the test. The researchers tested the idea on a group of 20 anxious college students. They gave them two short math tests. After the first one, they asked the students to either sit quietly or write about their feelings about the upcoming second test. The researchers added to the pressure. They told the students that those who did well on the second test would get money. They also told them that their performance would affect other students as part of a team effort.

Professor Beilock says those who sat quietly scored an average of 12 percent worse on the second test. But the students who had written about their fears improved their performance by an average of five percent.

Next, the researchers used younger students in a biology class. They told them before final exams either to write about their feelings or to think about things unrelated to the test.

Professor Beilock says highly anxious students who did the writing got an average grade of B+, compared to a B-for those who did not.

The research shows that for students who are highly test-anxious, who’d done the writing intervention(介入), all of a sudden there was no relationship between test anxiety and performance. Those students most likely to worry were performing just as well as their classmates who don’t normally get nervous in these testing situations.

But what if students do not have a chance to write about their fears immediately before an exam or presentation? Professor Beilock says students can try it themselves at home or in the library and still improve their performance.

小题1:The purpose of the passage is         .

A．to build the confidence of the highly anxious test-takers

B．to introduce a research about the anxious test-takers

C．to improve the performance of the test-takers

D．to tell something about the highly anxious test-takers小题2:The underlined word “them” in paragraph 2 refers to       .

A．attention and memory resources

B．worries about the consequences

C．concerns about the exam

D．cognitive horsepower小题3:According to the research, the solution to the test anxiety is to       .

A．sit quietly before the exam

B．prepare well before the test

C．set their mind on happy memories

D．write about their feelings before the test小题4:The result of the research suggests that         .

A．proper amount of burden may turn out to be a good thing

B．avoiding facing the problem may contribute to relaxation

C．facing the fears bravely may help one to achieve more

D．taking no action before difficulty may result in success

男性，35岁，双下肢水肿2周，查体：血压130/80mmHg，双下肢轻度凹陷。尿常规：蛋白（﹢﹢﹢），红细胞（﹢﹢），Cr122μmol/L，血浆白蛋白28g/L。

为明确诊断，不需要的检查项目是（）。

A.肾活检

B.双肾超声

C.肾CT

D.尿蛋白定量

E.血脂

仲缩式吊具的驱动方式只有液压油缸驱动一种。（）

A、正确

B、错误

根据我国政府对WTO的承诺，在5年过渡期间，外国证券机构可以不通过中方中介直接从事（）。

A.A股交易

B.B股交易

C.债券交易

D.基金交易

对液压泵站通常说的“四不漏”是指（）。

A.不漏油

B.不漏水

C.不漏电

D.不漏气

E.不漏风