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问题 解答题
解下列不等式：
（1）3x2+5x-2≤0
（2）
3x-2
x-3
≥1
（3）x3-3x+2＞0．
答案

（1）∵（3x-1）（x+2）≤0，∴-2≤x≤

1
3
，∴不等式的解集为[-2
1
3
，]．…（4分）

（2）∵

3x-2
x-3
≥1，∴
(3x-2)-(x-3)
x-3
≥0，即
2x+1
x-3
≥0，解得 x＞3或x≤-
1
2
．

∴不等式的解集为（-∞，-

1
2
]∪（3，+∞）．  …（4分）

（3）x3-3x+2=x3-x-2x+2=x（x2-1）-2（x-1）=（x-1）（x2+x-2）

=（x-1）（x+2）（x-1）=（x-1）2（x+2）

∴由 x3-3x+2＞0可得x＞-2，x≠1，∴不等式的解集为{x|x＞-2，且x≠1}．…（4分）

单项选择题

企业与其关联方之间的业务往来，不符合独立交易原则而减少企业或者其关联方应纳税收入或者所得额的，税务机关有权按照合理方法调整，该调整的追溯期为（）。

A．3年

B．5年

C．10年

D．无限期
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单项选择题

One day, a poor boy who was selling goods from door to door to pay his way through school found he had only one thin dime left, and he was hungry. He decided he would ask for a meal at the next house. However, he lost his nerve when a lovely young woman opened the door. Instead of a meal he asked for a drink of water. She thought he looked hungry so she brought him a large glass of milk. He drank it slowly, and then asked, "How much do I owe you" "You don’t owe me anything," she replied. He said, "Then I thank you from my heart. ’
Years later that young woman became critically iii. The local doctors sent her to the big city, where they called in specialists to study her rare disease. Dr. Howard Kelly was called in for the consultation. When he heard the name of the town she came from, he rose immediately and ’went to her room. Dressed in his doctor’s gown he went in to see her. He recognized her at once. He went back to the consultation room determined to do his best to save her life. From that day he gave special attention to the case. After a long struggle, the battle was won.
Dr. Kelly requested the business office to pass the final bill to him for approval. He looked at it and then wrote something on the edge. The bill was sent to her room. She feared to open it, for she was sure it would take the rest of her life to pay for it all. Finally she looked, and something caught her attention on the side of the bill. She read these words: "Paid in full with one glass of milk.\

Dr. Kelly gave special attention to the case mainly because ________.

A．he fell in love with the woman

B．it was a rare disease

C．he was eager to distinguish himself

D．he wanted to repay the woman for her great kindness
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