问题
选择题
_____ scientist have found recently is that skinny genes can explain why some people are always thin. [ ]
A. That
B. Which
C. What
D. When
答案
答案：C
搜题请搜索小程序“爱下问搜题”
_____ scientist have found recently is that skinny genes can explain why some people are always thin. [ ]
A. That
B. Which
C. What
D. When
答案：C