APCUPS在正常工作时，主要带载的为（）A、Delta变换器 B、功率变换器 C、市电

_______ your letter, I am pleased to tell you that you are to receive the answer by the end of this week.

A．Concerned about

B．Concerning

C．Concerning with

D．Concerned

Until recently daydreaming was viewed as a waste of time. Or it ___小题1:_______（consider） an unhealthy escape from real life and its duties. But now some people are taking a fresh look at daydreaming. Some think it may be a very ______小题2:____ （health） thing to do. Some researchers are finding that daydreaming may be important to mental health. Daydreaming, they tell us ,____ 小题3:___（be） a good means of relaxation. But its benefits go beyond this. A number of psychologists have conducted experiments and have reached some    小题4:（surprise） conclusions.

Dr. Joan T. Freyberg has concluded that daydreaming contributes to intellectual growth. It also improves      小题5:   （concentrate）,attention span, and the ability _____小题6:____ (get) along with others. Industrialist Henry J. Kaiser believed that much of his success was due to the positive use of daydreaming. Florence Nightingale dreamed of becoming a nurse. The young Thomas Edison pictured      小题7:    as an inventor. For these notable persons, it appears    小题8:   their daydreams came true. Dr. Harry Emerson Fosdick offered this advice: “Hold a picture of yourself… in your mind’s eye, ____小题9:______will drew you toward success. Picture yourself   小题10:    (vivid) as defeated and that alone will make victory impossible.

       提起西藏，人们一般想到的是雪域高原上的牦牛、金碧辉煌的寺庙和载歌载舞的藏族同胞。其实，这块号称世界屋脊的土地还有异常丰富的景观，它不但有世界最高的山峰，还有世界最深的峡谷——雅鲁藏布大峡谷。  

1．读完文段，我们知道西藏有_______、______、_______ 、________、________等吸引着我们，课文以这段文字开头，是为了介绍____________________________。  

2．语段中破折号的作用是___________________。  

3．语段中的“世界屋脊”指的是________________，“世界上最高的山峰”指的是__________________.

纵观当今世界保险市笋，除少数发展中国家外，大多数保险市场都属于（）。

A.完全垄断型保险市场

B.垄断和竞争并存型保险市场

C.完全竞争型保险市场

D.完全自由型保险市场

没有控制剂量率设备的荧光透视检查，即使判断为正当时也应限制其使用。