根据《注册造价工程师管理办法》的规定,对申请变更注册的、延续注册的,注册机关应当自受理之日起( )日内做出决定。
A.10 B.15C.20 D.30
参考答案:A
Ladies and gentlemen,please fasten your seat belts,the plane______.[ ]
A.takes off
B.is taking off
C.is going to take off
D.is to take off
Our teacher said the earth _____ around the sun.[ ]
A. went
B. go
C. goes
D. is going