How to develop a new airplane technology．,Features and -找考题网

单项选择题

A．How to develop a new airplane technology.
B．Features and possible usages of a special engine.
C．How to do experiment with dangerous engines.
D．How to do experiment with unmanned airplanes.

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A．Two.B．Four.C．Six.D．Five.

A．Two.
B．Four.
C．Six.
D．Five.

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A．Mark’s train has left earlier.B．Mark’s train has been delayed.C．Mark’s train is often late.D．Mark is likely to miss the train.

A．Mark’s train has left earlier.
B．Mark’s train has been delayed.
C．Mark’s train is often late.
D．Mark is likely to miss the train.

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