问题
选择题
____ do you like winter? Because I can ____ snow. [ ]
A. Why…play with
B. When… play on
C. How…playing in
答案
答案：A
搜题请搜索小程序“爱下问搜题”
____ do you like winter? Because I can ____ snow. [ ]
A. Why…play with
B. When… play on
C. How…playing in
答案：A
为原料，某药物中间体合成路线如下(部分反应条件和产物略)