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According to Choe's hypothesis,
A.the“I'm dead”chemical leaves the body of an ant when it dies.
B.an ant still smells like a living one when it dies.
C.an ant gives off a new chemical when it dies.
D.the“I'm not dead yet”chemical leaves the body of an ant when it dies.

A.the“I'm
B.
B.an
C.
C.an
D.
D.the“I'm

【参考答案】

D
解析:短文第六段第一句提到“崔指出,当一只阿根廷蚂蚁死后,发出‘等等,我还没死呢’这一信号的化学物质立刻消失”,故选D。
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