问题
单项选择题
间接的带电作业法，操作复杂、工效（）。
A.一般；
B.很高；
C.较高；
D.较低。
答案
参考答案：D
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间接的带电作业法，操作复杂、工效（）。
A.一般；
B.很高；
C.较高；
D.较低。
参考答案：D
It is summer vacation and school is closed. Children don’t need to study 1 exams. During the summer vacation, many children stay at home to 2 TV, eat delicious food and play with 3 friends. Some take part in (参加) a neighborhood program, go to 4 museums or go camping. A camp is a summer vacation place for 5 . They can go swimming, climb mountains, go to the beach or go hiking. Now, there are 6 camps. They are not expensive. At these camps, children learn 7 to use computers. Most children enjoy playing computer games. At the computer camps, they can learn some things about the computer, 8 friends and talk about some things 9 their friends. If you don’t have a plan yet, a computer camp should be a 10 choice(选择).
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