题号:16 题型:单选题（请在以下几个选项中选择唯一正确答案） 本题分数:5
内容:
Have you had any ______ experience, or is this kind of work new to you?
选项:
a、previous
b、 precious
c、 private
d、 precise
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题号:17 题型:单选题（请在以下几个选项中选择唯一正确答案） 本题分数:5
内容:
It is reported that the United States uses ______ energy as the whole of Europe.
选项:
a、as twice
b、 twice much
c、 twice much as
d、 twice as much
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题号:18 题型:单选题（请在以下几个选项中选择唯一正确答案） 本题分数:5
内容:
Mr. Brown has a strong ______of duty.
选项:
a、sense
b、 emotion
c、 feeling
d、 thought
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题号:19 题型:单选题（请在以下几个选项中选择唯一正确答案） 本题分数:5
内容:
I felt a great weight ____ off my mind when I heard that she was released from prison yesterday.
选项:
a、took
b、take
c、taking
d、taken
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题号:20 题型:单选题（请在以下几个选项中选择唯一正确答案） 本题分数:5
内容:
Roses need special care ______ they can live through winter.
选项:
a、because
b、 so that
c、 even if
d、 as