问题 多项选择题

球墨铸铁的主要特点有()。

A.成本较高,生产不便

B.综合机械性能接近于钢

C.含碳量较灰口铸铁低

D.抗拉强度远超过灰口铸铁

答案

参考答案:B, D

解析:

球墨铸铁成本低廉,生产方便,与灰口铸铁相比,它的含碳量较高;球墨铸铁的抗拉强度远远超过灰口铸铁,而与钢相当;它是一种高强度铸铁材料,其综合机械性能接近于钢。

阅读理解

Born into a farmer’s family, life was not easy when I was a kid. We were so poor that we often did not know where our next meal was coming from. I had to sell cabbages at the marketplace to support my family.

A storyteller once came to the marketplace, and I went to listen to him. My mother was unhappy with me for forgetting my job. But that night, while she was making clothes for us under the weak light of an oil lamp, I couldn't help retelling stories I'd heard that day. She listened impatiently at first, since in her eyes professional(职业的) storytellers were smooth-talking men—nothing good ever came out of their mouths. But slowly she was attracted by my retold stories, and from that day on, she never gave me any task on market days, unspoken agreement to enjoy new stories. As a repayment(回报)for Mother's kindness and a way to show off my memory, I'd retell the stories for her in lively detail. Soon, she wasn't the only member of my audience, which later included my elder sisters, my aunts, even my stubborn grandmother.

I knew she was worried about me. Talkative kids are not well thought of in our village, for they can bring trouble to themselves and to their families when they talk too much. Mother often reminded me not to talk so much, wanting me to be a silent and modest teenager. However, my natural desire(渴望)to talk never went away, and that is what makes my name – Mo Yan, which means ‘no speaking’. This strong wish to talk also improved my ability to express myself, which is important for writers who are also considered as storytellers.

小题1:Mo Yan lived a/an ________ life when he was young.

A.hard

B.colourful

C.easy

D.rich小题2:From the second paragraph, we can learn that ________.

A.little Mo Yan was interested in selling vegetables

B.his mother was attracted by the retold story at first

C.his mother didn’t let him listen to the new stories again

D.little Mo Yan had quite a good memory小题3:Why did his mother dislike the professional storytellers?

A.Because she thought they never said anything good.

B.Because she thought they couldn’t make much money.

C.Because she thought they would affect Mo Yan’s schoolwork.

D.Because she thought most people didn’t like listening to stories.小题4:In Mo Yan’s opinion, a writer should be a ________ child when they were young.

A.silent

B.modest

C.talkative

D.trouble-making小题5:Which is the best title(标题)of the passage?

A.My Unlucky Childhood

B.A Storyteller’s Childhood

C.My Kind Grandmother

D.More talking leads to success

单项选择题