题目内容

系统分析包括：

A. 问题识别
B. 可行性分析
C. 详细调查
D. 系统化分析、逻辑方案设计等

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Ex.7-1 Listen to people speaking and decide what they are talking about.

A. likes
B. Safety.
C. Danger.
Dislikes.

EX.7-2Listentopeoplespeakinganddecidewhattheyaretalkingabout.

A. Education.
B. Document.
C. Payment.
D. Action.

EX.7-3Listentopeoplespeakinganddecidewhattheyaretalkingabout.

A. Idea.
B. Work.
C. Dream
D. Opinion.

EX.7-4Listentopeoplespeakinganddecidewhattheyaretalkingabout.

A. Internetconnectivity.
B. Driverlessvehicles.
C. Physicaldevices.
D. Bigdata.