单项选择题

The overall economic situation had improved．

A．总体上说，经济形势有了改变。
B．半数地区的经济态势有了好转。
C．整个经济形势已被证明了。
D．总的经济形势有了好转。

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热门试题

单项选择题

We ask you to extend the letter of credit till the next year．

A．请贵方将信用证的有效期延长到明年。
B．我们请你方在下一年延长我们的信用证期限。
C．我们请求你将信用证的期限延长到明年。
D．我们请求你将这封有关我们信誉的信保留到明年。

单项选择题

Now, scientists still don't really know （）

A．whether animals can think about the past and the future
B．how children learn and what happens when we speak
C．at what age, a child can speak his language very well
D．what animal can understand some things more quickly than human beings