药物经皮渗透速率与其理化性质相关。下列药物中，透皮速率相对较

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问题单项选择题

药物经皮渗透速率与其理化性质相关。下列药物中，透皮速率相对较大的是（）。

A.熔点高的药物

B.离子型的药物

C.脂溶性大的药物

D.分子极性高的药物

E.分子体积大的药物

答案

参考答案：C

阅读理解

阅读短文，判断下列句子正(T)误(F)。

It's December 24th today. It's Mary and Betty's birthday. They are American girls. They are twins.

They're in the same school and come home together. There's a birthday party in their home this evening.

Their parents, Mr. and Mrs. White are very busy. Twelve children are at the party. Mary and Betty have

got a lot of birthday presents from their parents and friends. The presents are all lovely.

Now everything is ready. Mary begins to cut the birthday cake. The children sing "Happy birthday to

you." They're having a good time.

( ) 1. Tomorrow is Christmas Day.

( ) 2. Betty is Mary's brother.

( ) 3. Betty and Mary's parents sing "Happy birthday to you." with the children.

( ) 4. All of the children are happy at the party.

( ) 5. Betty and Mary are in the same school.

单项选择题

有一种注意，事先是有目的的，但是在进行时又不需要意志努力。它既服从当前的任务要求，又可以节省意志的努力。这是指（）

A.随意注意

B.不随意注意

C.随意后注意

D.有意注意