单项选择题

If the condor population has tripled since two decades ago, about how many are there now（）

A．90.
B．60.
C．33.
D．300.

<上一题目录下一题>

热门试题

单项选择题

Why is the program that's trying to save condors putting them into danger（）

A．They have captured all the condors.
B．Birds raised in captivity are attracted to humans.
C．Hunters want to shoot them.
D．There is not enough food for condors.

单项选择题

What is one suggestion to help save the condors（）

A．Let all condors free.
B．Don't allow anyone to hunt.
C．Make hunters use different kinds of bullets.
D．Move the condors out of Californi