单项选择题


Questions 23 to 25 are based on the conversation you have just heard.

A．Money to pay the extra tuition cost.
B．Maturity and common sense.
C．Mastery of a foreign language.
D．Flexibility and open-mindedness.
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单项选择题
A．It is more exciting than space travel.B．It is much cheaper than space travel.C．It is much safer than space travel.D．It is less time-consuming than space travel.
A．It is more exciting than space travel.
B．It is much cheaper than space travel.
C．It is much safer than space travel.
D．It is less time-consuming than space travel.
单项选择题
A．It keeps blood vessels from being blocked.B．It speeds up their recovery after surgery.C．It increases the blood flow to the heart.D．It adjusts their blood pressure.
A．It keeps blood vessels from being blocked.
B．It speeds up their recovery after surgery.
C．It increases the blood flow to the heart.
D．It adjusts their blood pressure.
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