人的心脏跳动的次数随年龄而变化。青少年平均每分钟心跳约75次，婴儿每分钟心跳比青

请根据句意从方框中选择合适的单词，并用其适当形式填空，使句子通顺。

小题1:This shop sells all kinds of    ▲   from different countries.

小题2:I hear that her uncle has bought a new flat in the city centre    ▲   .

小题3:Jack won the    ▲   prize in the school reading contest and he felt very excited.

小题4:He had to make a    ▲   between staying with his parents and going abroad. 

小题5:You know Mike’s hobby is playing football, but    ▲   is collecting stamps.

显微下具菊糖的药材有：（）

A.桔梗

B.党参

C.木香

D.白术

E.苍术

以纲要的形式编写的、有关学科教学内容的指导性文件是（）。

头肩底是头肩顶的倒转形态，是一个可靠的买进时机。 ( )

卫生服务需求的预测方法有哪些？