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问题 单项选择题

组成早期胚囊的是（）

A.12个细胞的实心细胞团

B.14个细胞的实心细胞团

C.16个细胞的实心细胞团

D.18个细胞的实心细胞团

E.20个细胞的实心细胞团

答案

参考答案：C

解答题

有这样一道题目：“当a=0.35，b=-0.28时，求多项式7a3-3（2a3b-a2b-a3）+（6a3b-3a2b）-（10a3-3）的值”．小敏指出，题中给出的条件a=0.35，b=-0.28是多余的，她的说法有道理吗？为什么？
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单项选择题

Two family members are arguing in a child's room. They start to hit each other and the child is crying. What's the most appropriate nursing action ？（）

A．Call security to come and intervene.

B．Remove the child from the room.

C．Ask one of the family members to leave the room.

D．Try to reason with both family members.
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