试题与答案

.如图所示,质量为M的三角形木块A静止在水平面上。一质量为m的物体B正沿A的斜面

题型:选择题

题目:

.如图所示,质量为M的三角形木块A静止在水平面上。一质量为m的物体B正沿A的斜面下滑,三角形木块A仍然保持静止。则下列说法中正确的是

A.A对地面的压力大小可能小于

B.水平面对A静摩擦力方向不可能水平向左

C.水平面对A的静摩擦力可能为零

D.若B沿A的斜面下滑时突然受到一沿斜面向上的力F的作用,如果力F的大小满足一定条件,三角形木块A可能会立刻开始滑动

答案:

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参考答案:D

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题型:阅读理解

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     Being able to connect with others through small talk can lead to big things, according to Debra Fine, author of"the Fine Art of Small Talk."

     Fine and her fellow authorities on making small talk offer the following tips for starting-and

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     2. Be the first to say"Hello." If you're not sure the othe r person will remember you, offer your name to ease

the pressure. For example:"Charles Bartlett? Lynn Schmidt-good to see you again." Smile first and always shake hands when you meet someone.

     3. Have something interesting to contribute. Keeping up with current events and culture will provide you with great conversation builders, leading with"What do you think of...?""Have you heard...?" Stay away from negative or controversial topics.

     4. Have a few exit lines ready so that you can both gracefully move on. For example,"I need to check in with a client over the re,""I skipped lunch today, so I need to visit the buffet," or you can offer to refresh the ir drink.

     When should you exit a conversation? According to Susan RoAne, author and speaker known as the

"Mingling Maven," your aim in all conversations should be to make a good impression and leave people wanting more. To do that, she advises:"Be bright. Be brief. Be gone."

1. What is the best title of the passage? (Please answer within 10 words.)

______________________________________________________________________

2. Which sentence in the passage can be replaced by the following one? Try to prepare some good and

     easy topics to get your small talk going on further.

______________________________________________________________________

3. Please fill in the blank in the third paragraph with proper words or phrases to complete the sentence.

    (Please answer within 10 words.)

______________________________________________________________________

4. What do you think the author do with in the last two paragraphs? (Please answer within 30 words.)

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5. Translate the underlined sentences in the fourth paragraph into Chinese.

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