题目内容

According to the passage, when bored, we usually

A. trigger less brain activity.
B. concentrate on time passing.
C. pay less attention to duration.
D. care less about time passing.

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生物死后快速被埋起来有利于保存为化石。()

The passage mainly aims to

A. explain why time flies when people have fun.
B. prove time slows when having fun.
C. explain brain activity when having fun.
D. illustrate why time flies.

角石是羊角形成的化石。()
参考答案:错误

“燕子石”常见于山东地区的寒武纪地层。()

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