问题 选择题
如图所示,设有一分子位于图中的坐标原点O处不动,另一分子可位于x轴上不同位置处,图中纵坐标表示这两个行间分子力的大小,两条曲线分别表示斥力和吸力的大小随两分子间距离变化的关系,e为两曲线的交点,则(  )

A.ab表示吸力,cd表示斥力,e点的横坐标可能为10-15m

B.ab表示斥力,cd表示吸力,e点的横坐标可能为10-10m

C.ab表示吸力,cd表示斥力,e点的横坐标可能为10-10m

D.ab表示斥力,cd表示吸力,e点的横坐标可能为10-15m

答案

答案:C

阅读理解

A famous Renoir had been stolen from a museum. Detective Earl Blackman was to work on the case.

Everyone was in the dark before an art professor came to point out the false picture. So the museum even didn’t know when the picture had been stolen. Thousands of people came to visit the museum every day. After long work, some art students were focused on.

The five students who had made copies of the Renoir during the last six months were asked to bring their copies to the museum. The fifth student said she had sold her copy, which was later proved to be the one in the museum. She, however, could only remember the buyer was a man with the little finger on his left hand missing.

Blackman went back and stayed in his office looking at all the pictures of known thieves. No success.

The next afternoon, at about closing time, Blackman went to the museum to ask if the cleaning men were in the museum after everyone else had left. The director told him they had no cleaning man but six cleaning women.

As the detective left the director’s office, he saw five cleaning women. He stopped one and asked about her work. Then came the sixth cleaning woman. She was dressed just like the other women except the gloves on her hands which made her different. Blackman watched her for some time. When she came near, Blackman caught her. The woman cried out in a man’s voice, “What was that?” Blackman was more sure.

小题1:Everything came to light ________________.

A.when an art student was asked

B.when the cleaning man came into the office

C.when Blackman looked at all the pictures

D.when the cleaning woman cried小题2:Arrange the following sentences in the right order.

a. The museum asked for help.

b. The four students showed their copies.

c. An art professor came.

d. The detective looked at all the pictures.

e. The thief bought a picture.

A.a-c-e-d-b

B.c-a-d-s-b

C.e-c-a-b-d

D.e-a-b-d-c小题3:Blackman caught the cleaning woman because of __________.

A.the glove

B.the clothes

C.her sex

D.her work

单项选择题