21世纪的国际竞争是多方面的,而且日趋激烈,但归根到底是( )。
A.综合国力的竞争
B.经济实力的竞争
C.科技实力的竞争
D.人才的竞争
参考答案:A
—Excuse me, Professor Smith, I was wondering if I could leave a quarter earlier today.
— _____ .
A.Nothing the matter.
B.Sure, go ahead
C.Oh, why not?
D.Of course, no problem.
实物黄金投资的优点是( )。
A.兑现容易
B.交易对象直观
C.交易成本低
D.交割方便