单项选择题

Questions 26 to 28 are based on the passage you have just heard.

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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单项选择题
A．He helped get her into the program.B．He recorded some tapes especially for her.C．He gave her a good grade in her Japanese class.D．He told her about an interesting movie to watch.
A．He helped get her into the program.
B．He recorded some tapes especially for her.
C．He gave her a good grade in her Japanese class.
D．He told her about an interesting movie to watch.
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