单项选择题

According to the passage, "chemistry" (para 5, line 2) means ______.

A．chemical substances
B．a scientific subject
C．attraction
D．first impression
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单项选择题
Ifa person fancies another person at a speed dating, he she may ______.
A．contact the person later
B．let the organizer know about that
C．tell the person immediately
D．keep it to himself/herself
单项选择题
Gyms are not making the nation fit (Line 10, Para 3) means ______.
A．a country should not build so many gyms
B．gyms harm people's health
C．gyms are not necessarily the access to good health
D．gyms can't make the country a healthy one
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