单项选择题

When he traveled abroad, Mr. Smith ______.()

A. learned boxing
B. forgot all about his business
C. raised the level of production
D. shook his head all the time

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单项选择题

According to the passage, coins once had real value as currency because they ______.()

A. represented a great improvement over barter
B. permitted easy transportation of wealth
C. were made of precious metals
D. could become collector’ s items

单项选择题

How did Ann feel after she had opened her eyes()

A. Very much pleased.
B. Very much frightened.
C. Greatly attracted.
D. Greatly surprised.