单项选择题

A number is an abstraction （） no physical existence.

A. has
B. to have
C. that has
D. who has

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单项选择题
（） getting the highest result in the class, John still had problems with classmates.

A. Despite of
B. In spite of
C. Even though
D. Nonetheless
单项选择题
The New York police were very anxious （） about the crime.

A. learn more
B. learning more
C. to learn more
D. more to learn
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