问题 不定项选择
不定项选择
如图甲所示,质量为2m的长木板静止地放在光滑的水平面上,另一质量为m的小铅块(可视为质点)以水平速度v0滑上木板的左端,恰能滑至木板的右端且与木板保持相对静止,铅块在运动过程中所受到的摩擦力始终不变。若将木板分成长度与质量均相等(即m1=m2=m)的两段1、2后,将它们紧挨着放在同一水平面上,让小铅块以相同的初速度v0由木板1的左端开始运动,如图乙所示,则下列说法正确的是(   )

A.小铅块滑到木板2的右端前就与之保持相对静止

B.小铅块滑到木板2的右端后与之保持相对静止

C.甲、乙两图所示的过程中产生的热量相等

D.图甲所示的过程产生的热量大于图乙所示的过程产生的热量

答案

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阅读理解

四、阅读理解(共20小题。每小题2分,满分40分)

A famous foreign company that invested in China wanted to employ a reception secretary for its public relation department.

A beautiful girl with a master degree in electric engineering became a winning candidate(候选人) through the difficult process of employment. At its last stage she faced an oral test together with another girl who was her equal not only in good looks but also in education standard. The girl we talk about was confident in herself and successful in the oral test. It seemed that she would get the chance. The examiner told her on behalf of(代表) the company that she could come to office of the company next Monday as a new employee. At last he asked her, “Have you anything else to say?”  Shocked by the unexpected question, the beautiful girl was quite at a loss, saying with hesitation(犹豫不决), “I have to talk with my parents before I give an answer.” Surprised, the examiner said calmly,“In that case, let’s wait till you are ready.”

The next day the girl came to tell that her parents agreed to her beginning work next Monday. But the examiner said regretfully, “Sorry, the job position is filled by another suitable candidate. You had better have a try in another place.” The beautiful girl was surprised. She asked for an explanation and was told, “What is needed here is a person who knows her own mind.”

That was how a good opportunity slipped away right under the nose of a beautiful girl.

56.What did the examiner value most?

A.One’s beautiful looks.    B.One’s knowledge.

C.One’s young age.        D.One’s independence.

57.It can be inferred from the passage that ________.

A.the other girl who failed at the last oral test was most likely(有可能)to get the job

B.another girl chosen in next test held the company

C.the company lost its best employee

D.the examiner was surprised at his first choice

58.Why did the beautiful girl want to ask her parents for advice?

A.She knew what to do.

B.She couldn’t answer the question.

C.She hadn’t expected the examiner would ask such a question.

D.Her parents would scold her if she agreed without their permission.

59.The best title of this passage probably is ________.

A.Make your decision quickly    B.Have your own judgment

C.Seize your chance in time      D.Hesitation leads to failure

单项选择题 A1/A2型题