试题与答案

某工厂为了处理生产过程中产生的污水以达到国家排放的标准,决定购买10台污水处理设

题型:解答题

题目:

某工厂为了处理生产过程中产生的污水以达到国家排放的标准,决定购买10台污水处理设备.现有A、B两种型号的设备,其中每台的价格、月处理污水量如表.经调查:购买一台A型设备比购买一台B型设备多3万元,购买2台A型设备比购买3台B型设备少3万元.
(1)求a,b的值;
(2)经预算该工厂购买污水处理设备的资金不能超过96万元,问该工厂有哪几种购买方案?
(3)在(2)的条件下,若每月要求处理污水量不低于2060吨,为了节约资金,请你为该工厂选出最省钱的购买方案.
型号A型B型
价格(万元/台)ab
处理污水量(吨/月)280200

答案:

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原式=6-126-26-236=-1366.

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题型:阅读理解

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     Tess, eight, always heard her parents talking about her brother, Andrew. He was very sick and they were

completely out of money. Only a very costly surgery could save him but no one would lend them money. She

heard Daddy said with desperation, "Only a miracle can save him."

     Counting all her coins in her bedroom and carefully bringing the coins, Tess slipped out the door and made

her way six blocks to Drug Store. She waited patiently for the pharmacist (药剂师) to give her some attention

but he was too busy at this moment. Tess twisted her feet to make a noise. Nothing. She cleared her throat

with the most disgusting sound she could produce. No good. Finally she took a coin and banged (发出砰声)

it on the counter. That did it! "And what do you want?" the pharmacist asked. "I'm talking to my brother from

Chicago whom I haven't seen for ages," he said without waiting for a reply to his question. "Well, let's talk

about my brother," Tess answered. "He's really, really sick and I want to buy a miracle." 

     ''Pardon?" said the pharmacist, "Andrew has something bad growing inside his head and my Daddy says

only a miracle can save him now. So how much does a miracle cost?" "No miracle here." the pharmacist said.

"Please, just tell me how much it costs." Tess pleaded. The pharmacist's brother bent down and asked, "What

kind of a miracle does your brother need?". "I don't know," Tess replied. "Ijust know he's really'sick and

Mommy says he needs an operation." "How much do you have?" asked the man from Chicago. "One dollar and

eleven cents." Tess answered shyly. "Well, what a coincidence (巧合)!" smiled the man, "That's the exact price.

Take me to where you live. Let's see if I have the kind of miracle you need."

     That man was Mr. Carlton. The operation was completed without charge and soon Andrew was home again 

     "That surgery," her Mom whispered, "was a real miracle. I wonder how much it would have cost?" Tess

smiled. She knew exactly how much a miracle cost.

1. According to the passage, which of the following statements is TRUE? [ ]

A. A miracle costs one point eleven dollars plus the faith of a little child.

B. Tess tried once to get the attention from the pharmacist but failed.

C. Tess's brother, Andrew, didn't survive the operation.

D. Tess is very brave to walk 5 blocks to the drug store to get help.

2. From the passage, you may see Mr. Carlton is _____. [ ]

A. a pharmacist

B. a policeman

C. a teacher

D. a surgeon

3. What was the pharmacist's attitude towards the girl when she tried to get his attention? [ ]

A. delighted

B. impatient

C. nervous

D. anxious

4. Which of the following proverbs best describes what happened in the story? [ ]

A. Nothing is impossible to a willing heart.

B. Two heads are better than one.

C. The early bird catches the worm.

D. Behind bad luck comes good luck.

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