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【单选题】
苷类药物作用于心肌细胞的A.
肾上腺素β受体
B.
肾上腺素α受体
C.
Ca2+泵
D.
Na+-K+-ATP酶
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举一反三
【单选题】It can be inferred from the last paragraph that_____.
A.
parents who have babies should be banned from smoking
B.
less smokers regard smoking harmful than nonsmokers do
C.
researchers fail to prove the harm of third-hand smoke now
D.
second-hand smoke does more harm than third-hand smoke
【单选题】若脊髓颈膨大节段的蛋白质前联合损伤,患者会出现
A.
右侧躯干和下肢痛、温觉丧失
B.
左侧躯干和下肢痛、温觉丧失
C.
两侧躯干和上肢痛、温觉丧失
D.
主要是两侧上肢痛、温觉丧失
E.
以上都不对
【简答题】以下哪个不属于钢筋常见的连接方式? ( B ) A 、 绑扎搭接 B 、铆钉连接 C 、焊接 D 、机械连接
【单选题】Why did the parents decide they should have fewer children?
A.
So they could give their children a good house to live in.
B.
So they could save some money.
C.
So they could give each one a good life.
D.
So they could have enough food for their children.
【单选题】Parents should pay attention to the cases _______ their children have difficulty adapting to new surroundings.
A.
where
B.
as
C.
why
D.
when
【单选题】Most families in China now have only one child. Parents should teach their children _____ others when they are young. [ ]
A.
what to play with
B.
when to get on with
C.
which to play with
D.
how to get on with
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