单项选择题

The doctor decided to test the chips himself because he believed that ______.

A．nobody would dare to try it
B．they can be used for identification purposes
C．it has been proved successful on animals
D．his patients expected him to experience it first

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热门试题

单项选择题

According to the writer, what is important for good table manners

A．Eating quietly without making noise.
B．Sitting still without glancing at others.
C．Using knives and spoons one by one.
D．Taking care to keep the napkin clean.

单项选择题

Guests who are unfamiliar with table manners often appear at dinner patties feeling ______.

A．improper
B．regretful
C．uncertain
D．dissatisfied