单项选择题

According to the text, why are test flights most dangerous()

A. The plane may explode in the air.
B. The pilot may lose control of the plane.
C. The engines may be damaged.
D. Too much air may get into the plane.

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热门试题

单项选择题

Where did the name Mark Twain come from()

A. It came from a safe passage.
B. It came from a term used by the boatmen.
C. It came from his boyhood.
D. It came from his measuring tool.

单项选择题

Gayle Yamada’s new film is entitled()

A. Pearl Harbor
B. The winds of war
C. Uncommon Courage
D. The Greatest Generation