问题
选择题
-The land in the southeast of China is in great need of .
-Yes, it hasn't rained for a long time there. [ ]
A. milk
B. tea
C. coffee
D. water
答案
答案：D
搜题请搜索小程序“爱下问搜题”
-The land in the southeast of China is in great need of .
-Yes, it hasn't rained for a long time there. [ ]
A. milk
B. tea
C. coffee
D. water
答案：D
O2(g)＝2CO2(g)＋H2O(g) 
H＝－1256 kJ·mol－1。下列说法正确的是（ ）