人体最重要的散热途径是(  )
   A．皮肤    B．肌肉    C．肺    D．肾    E．肠道

The work ______ in two days. A．has been finished B．will finish C．will be finished D．are finished

A.

B.has
C.will
D.will
E.are

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It was the first time she ______ at a summer school and she enjoyed it greatly. A．was B．has been C．had been D．is

A.

B.was
C.has
D.had

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