题目内容

The author's knowledge of Tibet is probably ______.

A. based on firsthand experience
B. the result of lifelong studies
C. derived from books only
D. limited to geological history

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燃烧中的两个重要概念是______。

A. 回火和自燃点
B. 爆炸极限和闪点
C. 闪点和自燃点
D. 回火和脱火

菜点价格的高低，应该服从______的原则。

A. 价格适应市场需求
B. 价格由经营者决定
C. 供大于求时提高价格
D. 价格与市场无关

The author takes a(an) ______ stance to the shift of names.

A. critical
B. objective
C. indifferent
D. sarcastic

Which of the following words best characterizes the European attitude to older workers

A. Disapproval
B. Dismay
C. Distrust
D. dislike