题目内容

She has been to Turkey,India,and Malta.

A. 对
B. 错

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As an expedition leader, he often works in the United Kingdom.

A. 对
B. 错

n阶行列式的定义可以解决哪些问题？

Read the text again and answer the following questions.Question 1. What problem is Venice facing now?

How serious is the problem ?