单项选择题


Questions 32 to 35 are based on the passage you have just heard.

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.
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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.
单项选择题
A．They grow up to be funny and charming.B．They often have a poor sense of direction.C．They get less attention from their parents.D．They tend to be smart and strong-willed.
A．They grow up to be funny and charming.
B．They often have a poor sense of direction.
C．They get less attention from their parents.
D．They tend to be smart and strong-willed.
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