题目内容

可逆线性变化不改变二次型的正定性

A. 对
B. 错

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性别认同障碍者一定是同性恋，这样说对还是错？

A. 对
B. 错

She would like to book a room for her mother.

A. 对
B. 错

Her boss wanted to stay in the hotel from the 23rd to the 25th of next month.

A. 对
B. 错

There are hundreds of visitors________in front of the Art Gallery to have a look at Van Gogh’s paintings.

A. waited
B. to wait
C. waiting
D. wait