试题与答案

有关增感屏对影像效果影响的叙述,错误的是() A.降低影像清晰度 B.增加图像对比度

题型:单项选择题

题目:

有关增感屏对影像效果影响的叙述,错误的是()

A.降低影像清晰度

B.增加图像对比度影像对比度

C.降低影像锐利度

D.增加图像颗粒性

E.提高空间分辨率

答案:

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题型:阅读理解

More than a hundred years ago, an American produced (创造) a game. He called it indoor tennis. The Americans were not interested in it at first so he sent it to his London friends and it became very popular (流行) in Britain. The game was then played across the dining-room table or on the floor with the net hung between two chairs. In the early days ,the balls were made of cork (软木) or rubber. The bats(球拍) were made of wood.

A few years later a hollow (空心) ball like the one we use today was invented. The game then quickly spread all over the world. An Englishman once made a bat covered with rubber. He first played the game in England and called it "ping - pong". "Ping" was the sound of the bat when it hit the ball, and "pong" was the sound of the ball when it hit the table.

小题1:Who invented the game of ping-pong?

A.A Chinese.

B.An Englishman.

C.An American.

D.We don't know.小题2:The game was first called ________ by its producer(创造者).

A.ping- pong tennis

B.table tennis

C.our-door tennis

D.indoor tennis小题3:What did the British think of the game?

A.Moving (感人的).

B.Interesting.

C.Terrible.

D.boring.小题4:In the early days,the ball was________.

A.hollow

B.covered with rubber

C.made of cork or rubber

D.made of wood小题5:The name of ping-pong has something to do with __________.

A.sound

B.size

C.history

D.place

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