问题 填空题

商场里的保洁员在拖过地后,常用电风扇对着地面吹,这样做的目的是通过加快空气流动来加快     (填物态变化的名称),使地面尽快变干。

答案

汽化或蒸发。

拖过地后地面的水变成水蒸气蒸发到空气中,有液态到气态为汽化。汽化两种方式蒸发和沸腾。影响蒸发的因素有三种:温度,表面积和表面空气流动速度。

阅读理解

阅读理解(共5小题,每小题2分)

Tom saw an advertisement(广告)in a newspaper for a beautiful bicycle. It cost 55 pounds so he went to the shop and asked to see one of the wonderful bicycles. The owner of the shop was happy to show one to Tom. Tom examined it carefully and then turned to the owner and said, ‘There isn’t a lamp(灯)on this bicycle, but there was one on the bicycle in your advertisement.” “Yes, sir” answered the man, “but the lamp isn’t included(包括)in the price of the bicycle.” “Not included in the price of the bicycle?” Tom said angrily, “But that’s not honest. If the lamp is in the advertisement, it should be included in the price.” “Well, sir” answered the shop owner coldly. “There is also a girl on the bicycle in the advertisement, but we can not give you a girl with the bicycle, either.”

小题1:In the advertisement, there was a     and a  on the bicycle.

A. lamp, girl         B. newspaper, shop owner        C. lamp, man

小题2:After he read the advertisement. Tom decided to    .

A.see and buy the lamp    B. ask the owner   C. see and buy the bike 

小题3:Tom  after he looked at the bike carefully

A. returned the bike to the shop owner

B. didn’t find a lamp on the bicycle

C. showed the bike to the shop owner

小题4:Tom thought it was  for the shop owner to sell the bike without a lamp while there was one in the advertisement.

A. wrong    B. honest    C. necessary

小题5:The text gives us a lesson that   .

A. we must read a newspaper carefully

B. bicycle must be examined carefully before they are bought

C. sometimes we can’t completely(完全地)believe an  advertisement

单项选择题