问题
选择题
_____ human beings live in great numbers, the waters are very likely to become contaminated.
A．That
B．Where
C．Even if
D．Though
答案
答案：B
搜题请搜索小程序“爱下问搜题”
_____ human beings live in great numbers, the waters are very likely to become contaminated.
A．That
B．Where
C．Even if
D．Though
答案：B