Which event is regarded as a turning point in the American War of Independence？
A. Battle of Saratoga.
Battle of Lexington.
C. Battle of Yorktown.
D. Boston Tea Party.
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One characteristic of the rich classes of a declining society is their tendency to______.
A. be more prosperous and incite community riot
B. absorb the newly rich in order to reinforce their ruling
C. refuse etiquette because it is a form. of barrier
D. adopt a set of etiquette which belongs to themselves exclusively
It can be inferred from the passage that "Giver" is a book which______.
A. contains many new and difficult words
B. has many levels of meaning
C. is easy to read
D. is about a boy's discovery
What had the researchers expected before the research？
A. The Net may account for the drop in psychological health.
B. Internet use may improve social health.
C. Internet use has nothing to do with social health.
D. Spending much time on the Internet makes people feel bad and lonely.
The prison-house mentioned in the second paragraph must be______.
A. of a long history
B. of new one
C. of delicate design
D. of fashionable design
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