未知题型
By 'physical environment'(Line 2, Paragraph 2), the writer means such elements as______.
A.the position of military troops
B.the presence of minicomputers
C.the strength of radio signals
D.the amount of water vapor in the air
- A.A.the
B.the
C.the
D.the
【参考答案】
D
解析：elements such as temperature，moisture，humidity，pres......
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单项选择题
会议的议题是根据会议目标确定并付诸会议讨论或解决的具体问题，是会议活动的必备要素。
A.正确
B.错误
