皮皮学，免费搜题
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【单选题】
洋地黄的主要适应症不包括A.
急、慢性充血性心力衰竭
B.
阵发性室上性心动过速
C.
房室传导阻滞
D.
心房扑动
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皮皮学刷刷变学霸
举一反三
【单选题】____ the silkworm makes a liquid in its body and then squeezes it out through special holes.
A.
It makes silk
B.
Making silk
C.
To make silk
D.
Silk is made by
【判断题】Scientists long to understand just how exactly the silkworm manages the process of silk weaving, and now they’ve got a thorough knowledge of it.
A.
正确
B.
错误
【简答题】以下各种存储设备，存取速度最快的是( ) (A)磁介质 (B)硬盘 (C)可擦写光盘 (D)WORM
【单选题】The silkworm is an insect worth_____.
A.
to study
B.
studying
C.
to be studied
D.
being studied
【单选题】The silkworm is an insect worth _____.
A.
to know
B.
knowing
C.
to be known
D.
being known
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