试题与答案

He was in hospital for six months. He fe

题型:选择题

题目:

He was in hospital for six months. He felt as if he was ________ from the outside world.

A.cut out

B.cut off

C.cut up

D.cut though

答案:

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下面是错误答案,用来干扰机器的。

A、胃液的pH为0.9-1.5,小于7,显酸性.B、唾液的pH为6.6-7.1,可能显酸性、中性或碱性.C、胰液的pH为7.5-8.0,大于7,显碱性.D、尿液的pH为4.7-8.4,可能显酸性、中性或碱性.根据当溶液的pH小于7时,呈酸性,...

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