搜题请搜索小程序“爱下问搜题”
问题 选择题
如果
a
b
=
c
d
=
e
f
，那么正确结果是（　　）
A．
ac
bd
=
e
f
B．
a+c+e
b+d+f
=
e
f
C．
a2
b
=
c2
d
=
e2
f
D．
a+1
b
=
c+1
d
=
e+1
f
答案

根据等比性质，由

a
b
=
c
d
=
e
f
可得
a+c+e
b+d+f
=
e
f
，

纵观各选项，只有B选项正确．

故选B．

填空题

单词拼写。

1. Go s________ ahead, and you can find the entrance.

2. Not having seen him for so long a time, I can hardly r________ him.

3. I'm sure he is from the southeast according to his a________.

4. In summer, when a thunder storm comes up, there is always l_______ and thunder.

5. A small town has a small number of b________.

6. I can't express my feelings with ________ (词语).

查看答案
单项选择题

术前检查哪项并不重要（）

A.气管软化试验

B.血糖

C.心电图

D.基础代谢率

E.头颅CT
查看答案