有广告宣称，普通股民通过专门培训，就能轻松掌握并实现零风险前提下的利润最大化。专家认为该广告不可信，因为（）
①股票是高收益与高风险同在的投资品
②股票的风险与收益是成反比关系的
③股票价格波动具有很大的不确定性
④股票价格波动规律是不可能认识的
A、①②
B、①③
C、①④
D、②③
参考答案：B
解析：
【考点】股票
【分析】股票是一种高风险高收益同在的投资产品，其价格具有很大的不确定性，因此实现零风险前提下的利润最大化的说法是不可能的，故①③正确；股票的风险与收益是成正比关系的，②错误；规律是可以被人们认识的，④错误。故本题答案选B。
| 阅读理解。 | |
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| 1. What makes the girl think the sweater is her favourite? | |
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| A. The girl's grandma made it. B. The girl got it at the age of three. C. The yarn is the color of bluebells. D. The cat Queen uses it for the kittens. | |
| 2. Why does the girl give the sweater away? | |
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| A. The girl is tired of the sweater. B. The girl wants her grandma to make a new sweater. C. The girl likes her new jacket better than the sweater. D. The girl thinks the sweater is too small. |
| 3. What will most likely happen to the green jacket? |
[ ] |
| A. The jacket will become too small. C. The girl will sell the jacket. B. The kittens will use the jacket for a bed. D. The jacket will become the girl's favorite. |
| 4. Read this line from the poem: "My favorite sweater grew too small." What does this line mean? |
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| A. The girl likes small sweaters. B. The girl's sweater became smaller than it once was. C. The girl's grandma made a small sweater. D. The girl became too big for the sweater. |
| 5. Read this line from the poem: Queen just had kittens out in the shed. The word "shed" in this line probably means ______. |
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| A. the girl's sweater B. the girl's jacket C. the cats' house D. the cats' sweater |