基础检测
一、1、lucky
2、broken
3、shopping
4、engineers
5、helpful
6、helping
二、1-5：C B C D A
三、1、to be；like to .
2、an engineer；checking；computer
3、asks；to read.
4、different skills；with all kinds of problerns
5、are like；big family
技能提升
1-5：B C C D A