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【单选题】
行列式 的值为A.
1
B.
2
C.
-1
D.
-2
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举一反三
【单选题】Which of the following statements is true about Wang Xin's flight to America?
A.
The flight to the US was about 18 hours.
B.
Wang Xin switched to another plane in Tokyo.
C.
The flight from Tokyo took off a little late.
D.
The flight to the American airport was delayed.
【简答题】Xin went to the library to borrow a book entitled Organic Chemistry, but she couldn't find it. She 1. ________ to the library desk for help. The librarian searched the 2. ________ and found that the b...
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