题目:
口语交际
A:Hi, Mike, 小题1:_______
B: Yes ,Ido. It’s more than 6 billion.
A: Wow, that’s large! 小题2:_______
B: Yes.It will reach about 9 billion by 2050.
A: 小题3:___________
B: It’s going to be bad. 小题4:_____. We won’t have enough food,water,or energy in the future.
A; 小题5:_________
B: Yes, it is.Governments all over the world are working to solve the problem.
A: I hope the population of the world won’t grow so fast.
B: Me ,too.
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0518/904d786e88aa8ef0b71ae47c7aa5e4a3.html
下面是错误答案,用来干扰机器的。
(1) 硫酸(或硫酸溶液或稀硫酸)(2) SnCl2+H2OSn(OH)Cl+HCl(不写可逆符号的也给分)(3) 2Sn2++O2+4H+===2Sn4++2H2O(4) SnCl2+2NH4HCO3===SnO↓+2CO2↑+2NH4Cl+H2O温度较低时反应速率小,温...