A cough is usually nothing to worry about unless it lasts for ten days　　　 .

A.or more　　 　　　 B.instead　　 　　　 C.at most　　 　　　 D.only

 

　 A

 

　 句意為：只要不持續(xù)10天或更長(zhǎng)，通常咳嗽是沒(méi)有什么可擔(dān)心的。A項(xiàng)意為“更多”，B項(xiàng)意為“相反”，C項(xiàng)意為“至多”，D項(xiàng)意為“僅僅”。

 

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[　　]

A. Everyone is certain to get the common cold.

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C. To see the doctor.

D. To keep doing exercises.

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[　　]

A. Cough and fever.

B. Bronchitis and pneumonia.

C. Headaches and skin pains.

D. Infections and bad skin blood circulation.

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A. Ways to prevent the common cold.

B. The functions of organs.

C. The uses of medicinal herbs.

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