可促进扦插生根的激素有（） A.吲哚丁酸 B.吲哚乙酸 C.萘乙酸 D.乙烯

The manager, ____ it clear to us that we should stick to the plan, left the meeting room.

A．who has made

B．having made

C．made

D．making

___________ go to the cinema now?[ ]

A. Are you

B. Shall we

C. Let's

D. Don't

Mary has ______ speaking dialects, so it is not surprising to see her communicate with the people from

different parts of this country easily. [ ]

A. a gift for

B. trouble in

C. effects on

D. nothing to do with

某公司有受海关监管的免税进口设备一台，原进口到岸价格为人民币500万元，管理年限为5年。15个月后该设备经海关批准出售，售价为400万元。如果该设备进口适用税率为20%，则该设备出售时应补缴的关税为( )。

A．60万元

B．75万元

C．80万元

D．100万元

在J2SEv1.4运行环境中，编译Java源程序的命令是 【2】 。