---In my opinion, Yichang is __________one of __________ best places for you.
A. the, the
B. /, the
C. the, /
D. /, /
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- You’ve dropped ________ “s” in the word “necessary”. - Oh, ________ letter “s” is doubled.
A. a; a
B. a; the
C. an; the
D. the; the
We can have_______ bluer sky if we create________ less polluted world.
A. a; a
B. a; the
C. the; a
D. the; the
已知x='ababassscdcdc'，则x.strip('ab')和x.strip('ba')的结果不同。
A. 对
B. 错
表达式'abcdefg'[20:]的值为空字符串。
A. 对
B. 错
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