问题
选择题
单项选择。
— pencils do you have? —I have three pencils.[ ]
A. How many
B. How
C. How much
答案
答案：A
搜题请搜索小程序“爱下问搜题”
单项选择。
— pencils do you have? —I have three pencils.[ ]
A. How many
B. How
C. How much
答案：A
2SO3 △H<0，对该反应的下列说法正确的是 [ ]