搜题请搜索小程序“爱下问搜题”
问题 解答题
10÷
2
5
-
3
4
×
2
9
．
答案

10÷

2
5
-
3
4
×
2
9
，

=25-

1
6
，

=24

5
6
．

选择题

下列实验过程中，始终无明显现象的是（　　）

A．NO2通入FeSO4溶液中

B．CO2通入CaCl2溶液中

C．NH3通入AlCl3溶液中

D．SO2通入已酸化的Ba（NO3）2溶液中
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选择题
— Jo and Jan, ______ have been in love for many years, got married last week?
— Yes, most of us think that they are a perfect ______.

A. that; example
B. who; match
C. which; figure
D. whom; pair
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