单项选择题

According to this passage, if you could not understand a passage, you ______

A．may not sit in the library
B．probably don't know its background
C．may not have practiced on reading it
D．probably think it is too easy for you to read

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热门试题

单项选择题

If a person finds getting up early a problem, most probably ______

A．he is a lazy person
B．he refuses to follow his own energy cycle
C．he is not sure when his energy is low
D．he is at his peak in the afternoon or evening

单项选择题

According to the passage, modern industry must have developed ______ .

A．before the Middle Ages
B．about in the nineteenth century
C．in Greece or Rome
D．machines to take tests