单项选择题

In Science/Health, "Tom Smith" is______.

A．a famous university
B．a medical center
C．a well-known doctor
D．a drug company
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单项选择题
According to the third text, which of the following has almost the same effect as Hypertension drugs
A．Exercise plus a healthy diet.
B．Loss of thirteen pounds in weight.
C．Six months of exercise without drugs.
D．Low-salt and low-fat food.
单项选择题
The main purpose of writing these three texts is ______.
A．to invite people to see films
B．to invite people to topic discussions
C．to attract more students to attend lectures
D．to attract more people to watch TV programs
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