单项选择题


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

A．To practice more arm exercises.
B．To make up for the shortage of leg exercises.
C．To involve more parts of the body into the exercises.
D．To lose weight before taking arm exercises or leg exercises.
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单项选择题
A．What kind of thread to use.B．How to design a needle which would not break.C．Where to put the needle.D．How to prevent the thread from getting caught around the needle.
A．What kind of thread to use.
B．How to design a needle which would not break.
C．Where to put the needle.
D．How to prevent the thread from getting caught around the needle.
单项选择题
A．By reducing the blood pressure.B．By making the brain active.C．By reducing tension caused by work.D．By improving the awareness.
A．By reducing the blood pressure.
B．By making the brain active.
C．By reducing tension caused by work.
D．By improving the awareness.
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