It is of high importance that you ___ at the airport on time.

单选题

It is of high importance that you ___ at the airport on time.

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单选题

It is high time we （)strong action against it.

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单选题

A high cloud is composed mostly of _______ ．

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单选题

It doesn’t matter.It is of no （）。

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单选题

Which of the following statements is TRUE?A. Warm current is the current with high water temperature.B. Warm current is the current with higher water temperature than the water it flows through.C. Warm current is flowing from deep layer of water to the surface.D. Warm current is flowing from the surface to the deeper water.

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