Some of us watch TV three _____ four ___

题型:选择题

问题:

Some of us watch TV three _____ four _______ a week.       [ ]

A. and; times

B. but; times    

C. and ; time  

D. or; times

考点:并列连词可数名词(单数名词,复数名词)
题型:选择题

4.6立方分米=______立方厘米6升=______毫升 400分=______时 73平方千米=______公顷.

题型:选择题

下列各项中表达正确的是(   )

A.CO2的分子模型:

B.F原子结构示意图:

C.NH3的结构式:

D.HCl的电子式为:

题型:选择题

阅读理解。

     Worrying about how you'll perform on a math test may actually contribute to a lower test score, US

researchers said on Saturday.

      Math anxiety-feelings of dread and fear and avoiding math-can weaken the brain's limited amount of

working capacity, a resource needed to calculate difficult math problems, said Mark Ashcrafi, a psychologist

at the University of Nevada Las Vegas who studies the problem.

     "It turns out that math anxiety occupies a person's working memory," said Ashcraft, who spoke at the

annual meeting of the American Association for the Advancement of Science in San Francisco.

     Ashcraft said while easy math tasks such as addition require only a small part of a person's working

memory, harder calculations require much more.

      Worrying about math takes up a large part of a person's working memory stores as well, spelling disaster

for the anxious student who is taking a high-stakes test ( 高风险测验).

     Stress about how one does on tests like college entrance exams can make even good math students choke.

"All of a sudden they start looking for the short cuts," said University of Chicago researcher Sian Beilock.

     Although test preparation classes can help students get over this anxiety, they are limited to students whose

families can afford them.

     Finally, she said, "It may not be wise to rely completely on scores to predict who will succeed."

     While the causes of math anxiety are unknown, Ashcraft said,"People who manage to get over math

anxiety have completely normal math ability."

1. Sian Beilock points out that stress________.

A. can't be avoided before college entrance exams

B. contributes to scores in college entrance exams

C. has no effects on good math students

D. has side effects on students in college entrance exams

2. What does the underlined word "spelling" probably mean?

A. causing

B. reducing

C. taking away

D. preparing for

3. What can we learn from the text?

A. The causes of math anxiety have already been found.

B. All of the students attend test preparation classes.

C. Math anxiety weakens working memory needed to do math.

D. Few measures can be taken to get rid of math anxiety.

4. What does the passage suggest middle school students do before exams?

A. Get relieved.

B. Review lessons.

C. Go to the doctor's.

D. Rely on scores.

题型:选择题

建筑业属事故多发性行业之一,在我国各行业伤亡事故中居第一位.

题型:选择题

根据《建筑安装工程费用项目组成》((2003)206号),对建筑材料、构件和建筑安装物进行一般鉴定和检查所发生的费用,应计入建筑安装工程()

A、措施费

B、工程建设其他费

C、研究试验费

D、材料费

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