问题
选择题
What shall we use for power when all the oil in the world has _____? [ ]
A. given out
B. put out
C. held up
D. used up
答案
答案：A
搜题请搜索小程序“爱下问搜题”
What shall we use for power when all the oil in the world has _____? [ ]
A. given out
B. put out
C. held up
D. used up
答案：A
B的化学方程式___________________________________.