题目内容

做下列变换，行列式式值不变的是（）.

A. 将行列式的行换为同序号的列（即进行转置操作）
B. 行列式两行（列）互换
C. 行列式的某一行（列）的所有元素乘以同一个数k
D. 把行列式的某一行（列）的各元素乘以同一个数k后加到另一行（列）的对应元素上

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(P73) Complete the sentences with suitable nouns that can collocate with the underlined words.subject child problem dish friend book1. I hope you don't mind, but I'm going tobring alonga _1_ case I get bored.2. Even though it is very tiring,bringing upa _2_ is one of the most rewarding things that a person can do.3. The issue of staff salaries was not a good _3_ tobring upat dinner with the CEO.4. It is really important tobring upany _4_ that you may have early on, or they will become worse with time.5. I know you don't know anyone at the wedding, so you canbringa _5_alongif you want.

(P73) Match the expressions with the correct sentences.

以下各项中，不属于中医所说的阴虚体质的形成原因的是（）。

A. 过食辛辣重味
B. 嗜酒
C. 饮水多
D. 久病伤阳

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A. 对
B. 错