有线宽带业务竣工后功能次日生效。

Mike always loves ships. When he was older, he said, “I’m going to be a soldier.” But his eyes were not very ___1_____, and he did not get in.

　　Then he said,“I’m going to   2  a small boat and I’m going around the world.”But boats were very expensive, and Mike did not have enough   3   .

　　Last summer Mike found a swimming   4    near his house. The lessons did not cost very   5   , and Mike began going to the school at every end of the week and having   6  . Now he is a good swimmer.

　　Last week a little boy said to him,“You’re a very good swimmer. How do   7  learn to swim so well?”

　　“I’m not good at all,”Mike said and he smiled.“  8  I’m in the water, I say to myself, There are   9  fishes behind me! Then I’m very afraid, and I    10   quickly.”

(       ) 1. A. big        B. beautiful   C. good         D. strong

(       ) 2. A. buy        B. make     C. borrow        D. draw

(       ) 3. A. food       B. work      C. time          D. money

(       ) 4. A. park       B. school     C. farm          D. factory

(       ) 5. A. much      B. little       C. many         D. any

(       ) 6. A. meals      B. lessons      C. talks         D. games

(       ) 7. A. I         B. they        C. we         D. you

(       ) 8. A. If         B. When       C. Though      D. Where

(       ) 9. A. interesting  B. nice       C. dangerous     D. different

(       ) 10. A. run       B. jump      C. swim         D. fly

任意调换12345各数位上数字的位置，所得的五位数中质数的个数是（　　）

A．4

B．8

C．12

D．0

中性点非有效接地系统的各段母线，应监测交流系统的绝缘。()

对带电作业安全有影响的气象条件因素主要有风、雨、雪及雷电

比重在830-904Jg/m的原油属（）原油。

A、轻质

B、中质

C、重质

D、特重质