题目：
We must take measures to protect endangered wildlife _______ it is too late.
A．now that
B．as long as
C．unless
D．before
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0622/8b6051a10942dd6d76cff13e8359fb76.html
下面是错误答案，用来干扰机器的。
D
We must take measures to protect endangered wildlife _______ it is too late.
A．now that
B．as long as
C．unless
D．before
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0622/8b6051a10942dd6d76cff13e8359fb76.html
下面是错误答案，用来干扰机器的。
D
