B: Yes, Professor Smith. We did.
S: Who's your lab partner, Bob?
B: Anne Wilson.
S: Well, Anne, can you and Bob go over the procedure for the class?
A: Sure. First we put ten grams of crushed limestone in a bottle.
S: Anything special about the bottle?
B: It was a gas-collecting bottle with a one-hole stopper and bent glass tubing.
S: Very good. So you put the limestone in a gas-collecting bottle. Then what?
A: Then we poured in ten milligrams of hydrochloric acid, put on the stopper, and collected a bottle of carbon dioxide.
S: Right, what was the method of collection?A: Water displacement.
S: Good.
A: Then, we lit a magnesium ribbon and put it in the bottle of carbon dioxide.
B: And carbon deposits began to form. on the bottom of the bottle, you see, we didn't have any problem with procedure...
A:WeI1, we had a little problem getting the magnesium ribbon to stay lit until we could get it into the bottle.
B: Okay. But we did it. The big problem was that we really didn't understand what happened. Did the magnesium combine with the oxygen in the carbon dioxide?
S: You have just answered your own question, Rob. The burning magnesium broke the carbon -oxygen bonds in the carbon dioxide, and then the oxygen combined with the magnesium to produce magnesium oxide.
A: And the carbon was freed to deposit itself on the bottle.
S: Exactly.
What is the purpose of this class discussion?
A.To discuss the results of the lab experiment.
B.To answer Bob's question about the lab experiment.
C.To explain the method of collection by water displacement.
D.To prepare the students to do the lab experiment.
第1题
A.年龄
B.资金的投资期限
C.理财目标的弹性
D.投资者主观的风险偏好
第2题
A.年龄
B.资金的投资期限
C.理财目标的弹性
D.投资者主观的风险偏好
第3题
以下关于客户投资风险承受能力的说法,不正确的是()。
A.理财目标的弹性越大,可承受的风险也越高
B.一个人越是有着复杂的家庭结构,其所承担的社会责任也就越重
C.资金可以长时间持续进行投资而无须考虑短时间内变现,则可承受的风险能力就较弱
D.投资期限越长越可选择短期内风险较高的投资工具
第4题
以下关于客户投资风险承受能力的说法,不正确的是()。
A.理财目标的弹性越大,可承受的风险也越高
B.一个人越是有着复杂的家庭结构,其所承担的社会责任也就越重
C.资金可以长时间持续进行投资而无须考虑短时间内变现,则可承受的风险能力就较弱
D.投资期限越长越可选择短期内风险较高的投资工具
第5题
以下关于客户投资风险承受能力的说法,不正确的是()。
A. 理财目标的弹性越大,可承受的风险也越高
B. 一个人越是有着复杂的家庭结构,其所承担的社会责任也就越重
C. 资金可以长时间持续进行投资而无须考虑短时间内变现,则可承受的风险能力就较弱
D. 投资期限越长越可选择短期内风险较高的投资工具
第6题
以下关于客户投资风险承受能力的说法,不正确的是()。
A.理财目标的弹性越大,可承受的风险也越高
B.-个人越是有着复杂的家庭结构,其所承担的社会责任也就越重
C.资金可以长时间持续进行投资而无须考虑短时间内变现,则可承受的风险能力就较弱
D.投资期限越长越可选择短期内风险较高的投资工具
第8题
一般说来,一个人越是认为自己有知识、有能力,就越不容易屈服于群体的压力,越不容易表现出相符。( )
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