One way of producing cold is to allow ______ .
A. a liquid to move slowly
B. a liquid to evaporate
C. a gas to evaporate
D. a molecule to move slowly
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To keep food in a good condition, refrigeration is ______ .
A. the only useful way
B. one of the two ways mentioned
C. only one of many ways used
D. one of the useful ways
1分子葡萄糖碳架糖酵解过程底物水平磷酸化次数为()。
A. 1
B. 2
C. 3
D. 4
E. 5
听力原文：Here are some shoes. What size do you want？
(3)
A. These shoes don't fit me.
B. Yes, I want to buy some shoes.
Can you show me those ones, please？
D. You are welcome.
A．groundsB．coursesC．doctrinesD．quotas
A. grounds
B. courses
C. doctrines
D. quotas
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