单项选择题

A.You’d betterB.You would betterC.You at leastD.You at ……

（）get your engine ready before six tomorrow morning.

A.You’d better
B.You would better
C.You at least
D.You at most

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单项选择题（）beautiful the ship is.

A.What
B.How much
C.Very
D.How

单项选择题（）a beautiful ship it is!

A.How
B.What
C.Very
D.So

单项选择题By plotting the analysis messages on weather charts，we are able to（）.

A.prevent any possible accident at sea
B.prepare a reasonable forecast of the wind and weather
C.help the mariner to fix a accurate ship's position
D.aid the salvage of a ship in peril