单项选择题

Passage 3
Questions 33 to 35 are based on the passage you have just heard.

A．How to make a powerful rocket engine.
B．How to ensure the safety of the crew.
C．How to choose qualified crewmen for the trip.
D．How to enable the spacecraft break free of gravity.
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单项选择题
A．Jack’s mother.B．Jack’s father.C．Jack’s daughter.D．Jack’s wife.
A．Jack’s mother.
B．Jack’s father.
C．Jack’s daughter.
D．Jack’s wife.
单项选择题
A．She’d be able to leave quickly.B．She’d be less nervous.C．She’d be able to locate where the man was seated.D．She’d know when her professor arrived.
A．She’d be able to leave quickly.
B．She’d be less nervous.
C．She’d be able to locate where the man was seated.
D．She’d know when her professor arrived.
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