单项选择题

汇率就是外汇市场的价格。（） A. 对 B. 错

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单项选择题

Which of the underline expressions is the hedging of the following sentences.
There is experimental work to show that a week or ten days may not be long enough and a fortnight to three weeks is probably the best theoretical period.
A、 There is experimental work to show that a week or ten days may not be long enough and a fortnight to three weeks is probably the best theoretical period.
B、 There is experimental work to show that a week or ten days may not be long enough and a fortnight to three weeks is probably the best theoretical period.
C、 There is experimental work to show that a week or ten days may not be long enough and a fortnight to three weeks is probably the best theoretical period.
D、 There is experimental work to show that a week or ten days may not be long enough and a fortnight to three weeks is probably the best theoretical period.

单项选择题

The United Nations will be in a ________ to support the extensive relief efforts needed.

A．way
B．push
C．position
D．move