赞题库-背景图
单项选择题

Questions 19 to 22 are based on the passage you have just heard.

A．They must have very advanced equipment.
B．They must be able to support themselves.
C．They must have an effective rescue plan.
D．They must hire experienced local residents.
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热门试题

单项选择题A．He is the most expensive athlete in his team.B．He caused the loss of the game.C．He cannot control his bad temper.D．He takes management courses in his free time.

A．He is the most expensive athlete in his team.
B．He caused the loss of the game.
C．He cannot control his bad temper.
D．He takes management courses in his free time.

单项选择题A．By bulldozers.B．By ships.C．By dogs.D．By human.

A．By bulldozers.
B．By ships.
C．By dogs.
D．By human.