下列化学方程式不能用离子方程式Ba2++SO42-＝BaSO4↓表示的是 A．
题型：选择题
问题：
下列化学方程式不能用离子方程式Ba2++SO42-＝BaSO4↓表示的是
A． Ba(NO3)2+H2SO4＝BaSO4↓+2HNO3
B．BaCl2+Na2SO4＝BaSO4↓+2NaCl
C． BaCl2+H2SO4＝BaSO4↓+2HCl
D． BaCO3+H2SO4＝BaSO4↓+H2O+CO2↑
题型：选择题
用who / whom / which / where / when / that 填空。
1. Here are players from Japan, some of ______ are our old friends.
2
. She lives in a small village, ______ is only three miles from here.
3. She is going to spend the summer holidays in Shanghai, ______ she has some friends.
4. We'll put off the meeting till next week, ______ we won't be so busy.
5. The sun gives the earth light and heat, ______ is very important to the living things.
6. Those ______ want to go to
the computer room write your names here.
7. He was often late, ______ made his teacher very angry.
8. Who is the person ______ is standing at the gate?
9. He talked about the teachers and schools ______ he had visited.