单选题 What does the author think about experimenting on apes?

A、 It should be stopped.
B、 It should not be stopped unless apes are shown to have a consciousness like our own.
C、 The medical advances gained are outweighed by the suffering of the apes.
D、 It is akin to experimenting on orphan children.

【正确答案】 B

【答案解析】属信息推断题。文章在结尾讲到：“但是，在我们关闭实验室，停止寻找艾滋病疫苗之前，我们最好先仔细地寻找类人猿有意识的根据。”这表明作者认为，直到证明类人猿具有意识之后我们才能停止进行实验。