下列哪项与毛细血管特点不相符合[ ] A．数量多，分布广 B_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题选择题

下列哪项与毛细血管特点不相符合[ ]

A．数量多，分布广

B．管腔内有瓣膜防止血液倒流

C．管内血流速度很慢

D．细胞只能单行通过

答案

B

单项选择题 A1型题

大叶性肺炎出现典型的X线表现是在（）。

A.充血期

B.实变期

C.消散期

D.实变期与消散期之间

E.潜伏期

填空题

用方框中所给单词的适当形式填空。

salt, mix, bake, throw, fly

1.  The drink is a       _  of three different kinds of fruits.
2.  You can buy some bread and cakes in the  _      .
3.  Look! Some children are playing with _       disk.
4.  The soup is too        _.  I can't stand it.
5.  The waste paper were __      everywhere.  How dirty!

leaf , drink, please, taste, fall

6.  In autumn, the_____ on the tree turn red, yellow and brown.
7.  Don't take too many things except _____. water while hiking.
8.  I met a few old friends there and we really had a _____evening.
9.  He decided _____  the new dish by himself.
10.  The book has _____from the table to the floor several times.