单项选择题


Questions 11 to 18 are based on the conversation you have just heard.

A．In about 40 minutes.
B．In about 30 minutes.
C．In about 20 minutes.
D．In about 10 minutes.
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单项选择题
A．It is good for improving muscle tone.B．It helps him lose weight.C．It helps develop mental toughness.D．It helps strengthen the heart.
A．It is good for improving muscle tone.
B．It helps him lose weight.
C．It helps develop mental toughness.
D．It helps strengthen the heart.
单项选择题
A．Farmers should use less insecticide:B．Farmers should use a combination of two or three insecticides at once.C．Farmers should attract new insects onto the crops certain times.D．Farmers should regularly spray crops as a precaution.
A．Farmers should use less insecticide:
B．Farmers should use a combination of two or three insecticides at once.
C．Farmers should attract new insects onto the crops certain times.
D．Farmers should regularly spray crops as a precaution.
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