He may not even drink water at night, _______ swallowing insects possibly floating on the surface．

    A．in case of  B．for fear of     

C．for the sake of    D．in line with

If we_________ sunlight_________ a dry leaf with a piece of glass, it may start burning.

1. A.
   work; out
2. B.
   carry; out
3. C.
   focus; on
4. D.
   concentrate; on

阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空，并将答案填写在答题卷标号为16—25的相应位置上。

       One of the many things we take for granted in the twentieth century is the speedy collection and delivery of letters to and from all parts of the world at _______ ( astonish ) cheap rates.

       A husband away ____ a business trip can write home to his wife two thousand miles away knowing that the letter will reach _____ in a few days. His special airletter may cost him less than a loaf of bread ____ his own bus fare to work.

       This service, however, is a favor of comparatively recent origin. Until modern times, the cost of sending letters privately was so great that the _____ ( arrive ) of a letter was a considerable event and might even cost financial hardship to the receiver ______ had to bear the charges.  _____ the Middle Ages on，there were indeed special messengers ______ ( carry ) state correspondence, and other messengers employed to travel with between the great monasteries or the great merchants’ houses, but for centuries there was no official post service by which private letters could be sent. It was not until 1840 ______ the official organization known as the Penny Post ____ ( establish ) in Great Britain and gave ordinary people cheap and efficient postal deliveries.

I stood up to speak and my mind went blank .Has this ever happened to you? You may be nervous in front of an audience（观众）.You may be worried that you didn’t prepare enough, You may have forgotten some of your facts. What can you do? Sometimes people prepare too much and become terrified if they can’t remember the words they have practised. It is a good idea to bring some notes to help you organize, but don’t memorize your speech. If you “go blank”,begin by explaining the purpose of your speech, and the test will probably follow.

“Go blank” here means       

A. to be absent-minded                B. to think too much suddenly

C. to be afraid of the audience          D. not knowing what to say at the moment

Before the listeners, the speakers who have pre-pared enough    

A. never go bland                         B. never feel afraid 

C. may forget the prepared words            D. may forget the opening speech

A good way to make to made a good speech is      

A. to memorize the speech             B. to organize the audience well

C. to have some brief motes at hand      D. to have the audience take notes

The man who goes blank in front of the listeners should       .

A. begin with the purpose of his speech       B. cut off the rest of his speech

C. see his notes right away                 D. find some way to draw the audience’s attention