3.If youengagein an activity you __________.
A. are actively involved with it
B. are not involved with it
查看答案
4.If we say "Derek and his twin brother Dick havestrikingdifferences in their personalities", it means the personality differences of Derek and Dick are __________.
A. very easy to be noticed
B. very hard to be noticed
5.The expression "cultivatea habit" means we __________.
A. try hard to develop this habit
B. try hard to get rid of this habit
6.The wordimplyrefers to __________.
A. express or state directly
B. express or state indirectly
水电工程常被称其为（）？
A. 施工工程
B. 隐蔽工程
C. 水路工程
D. 电路工程
微信支付 
支付宝支付