题目内容

Python中使用______表示代码块，不需要使用大括号。

A. 中括号
B. 小括呈
C. 缩进
D.
E. 号

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Python中使用______注释语句和运算。

A. : 冒号
B. “ 双引号
C.
D. 号
E. ' 单引号

Python中，标准库和第三方库，需要用______命令导入后，才能使用。

A. input
B. import
C. print
D. eval

Read the sentences about pirated software. They do not all belong in a paragraph for this assignment. Cross out the sentences that do not belong in this paragraph. Next to each sentence that remains, write a note telling what kind of information the sentence gives. （答案可拍照上传）1. Pirated software is one product that is counterfeit.2. Pirated music CDs are also a big problem, and they are very bad for musicians.3. I can buy pirated software in some small computer stores I know.4. You know it is pirated if it is very cheap.5. You can tell the software is pirated if the label is from a copy machine.6. Sometimes the seller gives you a CD that has no printing on it.7. Sometimes real copies of software cost more than a thousand dollars.8. I think it is wrong to buy pirated software because it is like stealing from the company.

常用异步集成计数器是：

A. 74LS90
B. 74LS161