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【单选题】
They appeared ____ me, so I had to explain to them.A．misunderstandingB．misunderstoodC．to be misuA.
30. They appeared ____ me, so I had to explain to them. A．misunderstanding
B.
misunderstood
C.
to be misunderstood
D.
to have misunderstood
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举一反三
【单选题】关于胎盘的形成，以下哪项不正确
A.
胎盘由羊膜、叶状绒毛膜和底蜕膜构成
B.
羊膜构成胎盘的胎儿部分，而叶状绒毛膜和底蜕膜构成胎盘的母体部分
C.
叶状绒毛膜的形成经历1级、2级和3级绒毛三个阶段
D.
足月妊娠时胎盘绒毛的表面积巨大，相当于成人肠道的总面积
【单选题】Is it wise to get a recorded robot to answer the telephone?
A.
No, it isn't.
B.
Yes, it is OK.
C.
Not mentioned.
D.
Nor surely.
【判断题】When a person dislikes his job, it is wise for him to get used to it rather than get out of it.
A.
正确
B.
错误
【简答题】肺炎时容易产发脓胸、脓气胸的常见病原体是（ ）
【单选题】One of the basic principles of wildlife conservation involves ______ adequate natural food and shelter to maintain populations of each species in a given habitat.
A.
the provision
B.
that provision
C.
to provide
D.
providing
【单选题】结合下图，关于鸟卵结构与功能的说法，不科学的是
A.
1为卵壳，起保护作用
B.
2为胚盘，所有胚盘都能发育成胚胎
C.
3为卵黄，胚胎发育的主要营养来源
D.
4为卵白，为胚胎的发育提供营养和水分
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