判断题

在大量的KI溶液中，加入少量的AgNO3溶液，则形成的胶粒带正电
正确
错误

【参考答案】

错误

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单项选择题

A.2:3B.3:2C.1:1D.1:3

问答题

Scenario （情节）A secretary in a company makes a call to ask about making a reservation for a conference room in a hotel, a person who is in charge of the conference room in the hotel answers the call.Task（任务）Work in pairs and practice a dialogue between the secretary and the person in charge of the conference room in the hotel based on the following information, and then write the script of the dialogue in the following answer box.Student A (secretary in the company) need to:Greet and tell the purpose of callingTell the size and time the meeting will lastTell the service for the meeting they need(direction sign, food)Ask about the facilities in the conference roomAsk about the rates(费用)Complete the conversation politely.Student B (hotel staff) need to:Respond to greetingsAsk about the size of meeting and how long the meeting will last.Ask about the service for the meetingTell the facilities in the conference room (projector, slides, full stereo sound, videos)Tell the ratesComplete the conversation politely.Sentence patterns for reference （供参考句式）What kind of service do you want?How many people are involved?That sounds reasonable.We want you to provide.... during the meeting.Students A start the conversation （学生A先讲话）

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