【简答题】蛔虫表皮层向内突出加厚形成四条表皮层线,分别是 ___________ 、 ___________ 和两条 ____________ ,它来源于 _________ 胚层。
【单选题】We hope that our customers can______ advantage of this new service.(2014.6)
【简答题】蛔虫表皮层向内突出加厚形成四条表皮层线 , 分别是 ( ) 线 、 ( ) 线 和 左右 两条 ( ) 线 , 它来源于 ( ) 胚层 。
【单选题】The Works Project Administration could __________
A.
relieve the burden of both the unemployed and the government
B.
satisfy the need of people from various fields of the society
C.
meet the need of most people who were once white-collars
D.
not offer people jobs which would support them for a whole life
【单选题】6 6. The rope is not strong enough to ______ the weight of the big case.
【单选题】If you want to get there before dark, you should start your journey ______. (2014.6)