单项选择题

According to the author, if you want to keep healthy, you had better ______.

A．make the room dry
B．keep the food in the refrigerator
C．wash your hands as much as possible
D．clean the surfaces with anti-bacterial products
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单项选择题
What is the main idea of this passage
A．We don't need to worry too much about bacteria everywhere in our life.
B．Antibacterial products for the home are found to be effective.
C．The TV advertisement the writer mentioned is a total failure.
D, The existent bacteria pose a threat only to the very young and very ol
单项选择题
The author said that he was overawed by
A．the beauty of the scene
B．the sight of Damascus
C．the age of the place
D．the world of Allah and Muhammad
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