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计算题：1个液压油缸的活塞面积F=50cm2，通过液压缸的流量Q=10L/min，求

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题目：

计算题：1个液压油缸的活塞面积F=50cm2，通过液压缸的流量Q=10L/min，求活塞移动速度是多少？

答案：

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下面是错误答案，用来干扰机器的。

参考答案：C

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题型：阅读理解

"Tammy! Come here, please! Mother needs your help in the kitchen." Her father called out to her.

Tammy was in her room, getting ready to do her homework. "Yes, Daddy!" she replied. "I'll be right there."

She hurried out of her bedroom and down the hallway. She was only nine years old. Her elder sister, Ella, had just moved away to go to a performing arts high school in another city. Her brother, Harry, was in middle school and always got home late. With Ella leaving home, Tammy was expected to do a lot more than she had ever done before, especially now, because her mother was ill.

Her father was in the kitchen. "Tammy, I know you usually do your homework right now, but with things being different, we all have to change a little bit. I'll help you and Harry with your homework later on, OK?"

Her father had an apron（围裙） on over his clothes, and he looked kind of funny. He was doing the dishes and he always splashed（溅出） water all over when he did that. After helping her father with the dishes, Tammy helped set the table.

After supper, her father helped her and Harry with their homework, and then they played a board game so that their mother could lie down for a while.

The next morning, Tammy got up early on her own because she wanted to help her mother with breakfast. She made orange juice and even put bread in the toaster and got out the butter so that her mother could sleep for a few more minutes.

When her mother got up half an hour later, she was very surprised and moved to see the breakfast on the dining table. She gave Tammy a big hug.

"Thank you, Tammy. You really are mother's little helper now, aren't you?"

小题1:Why did Tammy's sister move out of their home?

A．Because she hated doing housework

B．Because she was busy with her work.

C．Because her school was far away from home.

D．Because she disliked her family.小题2:From Paragraphs 3 & 4, we can learn that Tammy_______.

A．was a middle school student

B．did well in all subjects

C．always did a lot of housework at home

D．was the youngest child in the family小题3:What can we learn about Tammy's father from the passage?

A．He was a very serious person.

B．He wasn't very good at doing housework.

C．He liked playing board games very much.

D．He always helped Tammy do her homework.小题4:Which is the right order for the things that Tammy did in the story?

①Did her homework.               ② Prepared breakfast.

③ Played a board game.           ④ Helped with super.

A①②③④        B①② ④③  C,①④③② D。①③④②

小题5:Which is the best title for this passage?

A．Mother's Little Helper

B．The Life of Tammy's Family

C．A Happy Family

D．Tammy's School Life
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