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【多选题】
下图是三种微粒的结构示意图，有关它们的说法正确的是A.
它们的最外层电子数相同
B.
它们的核外都有两个电子层
C.
它们属于同种元素的微粒
D.
它们都是原子
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【单选题】Trick-or-treading safety. ________4________ You can go with your younger kids. Older kids can go in groups themselves. Allow children to go trick-or-treating early but avoid the evening rush hour. It ...
A.
Halloween candy safety.
B.
Pumpkins are heavy, even for adults.
C.
Because it ’ s easy for them to fall down.
D.
No child should go trick-or-treating alone.
E.
Too small costumes make your kids look strange.
F.
If you have time, you can go out and ask for candy with younger kids.
G.
The following simple tips can ensure kids ’ safety this Halloween season.
【单选题】Choose the right expressions to complete the sentences. If you are treading on controversial ground, you are ____.
A.
taking a risk
B.
making everybody happy
【单选题】If you are ____ on controversial ground, you are taking a risk.
A.
treating
B.
treading
【单选题】关于胰腺分泌的神经调节错误的是（）
A.
切断迷走神经可减少胰液分泌
B.
食物可通过对消化道的刺激经条件反射引起胰液分泌
C.
注射阿托品可减少胰液分泌
D.
迷走神经主要作用于胰腺腺泡细胞，对导管细胞作用比较弱
E.
迷走神经主要通过释放乙酰胆碱或促胃液素释放间接促进胰腺分泌
【简答题】If you are treading on controversial
ground , you are ________. (1.0分)A. taking a risk B. everybody happy
【简答题】将函数 在x=3处展开成幂级数．
【简答题】Answer the questions about the words and expressions. 根据划线部分回答问题,用A/B在句子后的横线上填空 1. If you split something up , do you (A) divide it into parts, or (B) put the parts together? (1) ___________________ ...
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