题目内容

假设某培训班上的学员甲和乙由亍:t3j间关系约好轮流去上课,则把看到甲去上课的事件设为A,把看到乙去上课的事件设为B,于是事件A与事件B互为()。

A. 非相关事件
B. 互不相容事件
C. 独立事件
D. 相关事件

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某项投资计划,预期有70%的机会获取收益率5%,有30%的可能性亏损5%,则该投资项目的期望收益率为()。

A. 0.02
B. 0.025
C. 0.03
D. 0.035

A.Bemuse she had them put in only a few months ago.B.Because she wanted to save the ne

A. Bemuse she had them put in only a few months ago.
Because she wanted to save the new ones for future use.
C. Because she liked worn-out pings.
D. Because she got them well cleaned.

听力原文:M: Do I have enough postage on this package?
W: Let's see. You already have one 15-cent stamp, end two 25-cent stamps on it. You only need one more 15-cent stamp.
Q: What is the total amount of postage required to mail the package?
(18)

A. One dollar.
B. One dollar and 5 cents.
C. 75 cents.
D. 80 cents.

听力原文:W: Exercise, exercise, exercise! We hear so much about it these days, yet even experts can't agree on which exercises are best. Now some doctors are strongly encouraging arm exercises.
M: Arm exercises? Is that because our arms are too fat and flabby?
W: Actually that's not the main reason. They say that arm exercises are an ideal way to become physically fit.
M: But don't arm exercises raise your blood pressure?
W: That they do. But the article I read mentioned ways to overcome that.
M: How?
W: By adding leg exercises, so the arms don't do all the work. The mare of the body that is involved in the exercises, the better.
M: And in mm, I am sure, there's a greater chance of losing weight.
W: Sounds tight to me.
M: So what exercises do the experts mend?
W: They mentioned quite a few. But some of the more popular ones are cycling with special bicycles that make you use both your arms and legs. And walking vigorously while you are moving your arms.
M: I must try that. I'd like to walk a lot.
(20)

A. They can raise one's blood pressure.
B. They are not acceptable to most people.
C. They can cause heart attack.
D. They can damage arm muscles.

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