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【简答题】
核酸一级结构是 ___, 也称 ___ 序列。其连接键是 ______, 多核苷酸链的书写方向是 ___ 。
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反馈参考答案：
举一反三
【简答题】A lot of people like pets. I like them ,too. My favorite pet is a pig. I call him Pink Pig. The color of his skin is light pink. Pink is very clever and we keep him in the house. He is clean. He likes...
【单选题】The big problem is that people are ________ to thinking and acting in a responsible and independent way.
A.
uncertain
B.
unimportant
C.
unpleasant
D.
unaccustomed
E.
unacceptable
【简答题】phrase. acting in the same way at the same time
【判断题】T he water in a pond can either be “living” or “dead”. G arden designers all tried to join their pond with the river system outside to make a living pond.
A.
正确
B.
错误
【单选题】关于联合国说法正确的是
A.
合国大会通过的决议对所有会员国产生广泛的影响
B.
合国是世界最大的政治性组织
C.
合国是唯一有权采取行动维护国际和平与安全的机构
D.
有国际性问题必须由联合国决定
E.
①
F.
①②
G.
①②③
H.
①②③④
【单选题】下列关于心理健康的说法不正确的是
A.
正常与异常是相对而言
B.
正常人心理都是健康的
C.
可以从文化学角度考量
D.
可以从病理学角度考量
E.
可以从统计学角度考量
【单选题】听力原文： The University of California at Davis has government experiments with chemicals to get a bigger crop each year. But they haven't paid enough attention to necessary safety measures. In 1964 or 19...
A.
It was flying low.
B.
Its wheels were caught on a tree.
C.
Because the chemicals caught fire easily.
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