问题 填空题

反射面是______,一束平行光照射到反射面上,会把平行的入射光线向着______反射,这种反射叫漫反射.

答案

反射面是凹凸不平的,一束平行光射到反射面上,反射光线不再平行,而是射向各个方向,这种反射叫做漫反射.

故答案为:凹凸不平;各个方向.

完形填空
Checks have largely taken the place of money as a means of    36  , for they are widely accepted everywhere.   37   this is very   38   for both buyer and seller, it should not be forgotten that checks are not real money: they are quite   39  in themselves. A shop-keeper runs a certain 40 when he accepts a check and he is quite   41  his rights if, on occasion, he   42  to do so. People do not always know this and are   43   if their good faith is called in question. A wealthy friend of mine told me he had an extremely   44  experience.
One day he decided to buy a particularly fine pearl necklace at a famous jewelry shop which keeps a large__45 of precious stones and asked if he could pay   46  check, the assistant said that this was quite  47 . But the moment my friend signed his name, he was invited into the manager’s office. The manager was very polite, but he explained that someone   48  exactly the same name had presented them with a worthless check not long ago. My friend got very angry at it and said he would buy a necklace   49 . When he got up to go, the manager told him that the police would arrive at any moment and he had better stay   50  he wanted to get into serious trouble. Sure enough the police arrived, __51 to my friend for the   52 ,  but explained that a person who had used the same name as his  53  for a number of recent robberies. Then the police asked my friend to    54   out a note which had been used by the thief in a number of shops. The note read, “I have a gun in my pocket, ask no questions and give all the money in the safe.” Fortunately, my friend’s handwriting was quite__55__ the thief’s. He was not only allowed to go without further delay, but to take the pearl necklace with him.
小题1:
A.change B.exchangeC.trade D.business
小题2:
A.BecauseB.If C.ThoughD.Since
小题3:
A.favouriteB.popularC.profitable D.convenient
小题4:
A.dangerous B.priceless C.unimportant D.valueless
小题5:
A.chance B.risk C.opportunityD.danger
小题6:
A.within B.out ofC.withoutD.beyond
小题7:
A.refuses B.agrees C.fails D.hates
小题8:
A.unhappy B.ashamed C.shockedD.puzzled
小题9:
A.uninteresting B.unreasonable C.unforgettableD.unpleasant
小题10:
A.amountB.accident C.stock D.number
小题11:
A.in B.by C.withD.on
小题12:
A.in need B.in common C.in use D.in order
小题13:
A.used B.with C.named D.by
小题14:
A.anywhere B.somewhere C.somewhere elseD.everywhere
小题15:
A.unless B.otherwise C.if D.whether
小题16:
A.coming B.stickingC.apologizing D.checking
小题17:
A.manner B.behavior C.inconvenienceD.treatment
小题18:
A.responsible B.answered C.chargedD.blamed
小题19:
A.copy B.read C.take D.bring
小题20:
A.unlike B.different C.dissimilar D.dislike
填空题