问题 填空题

给量筒内液体读数时,视线要______水平.某同学用量筒量取液体,量筒放平稳后,初次读数时仰视读数为10mL,加入部分液体后,俯视读数为15mL.则该学生实际加入量筒内的液体体积______ (填大于或小于)5mL.

答案

在使用量筒时不要仰视读数,也不要俯视读数,视线要与量筒内凹液面最低处保持水平;因为仰视读数看到的读数偏小,量取到的实际液体偏大,所以仰视读数为10mL,实际大于10mL,可假设为11mL;因为俯视读数看到的读数偏大,量取到的实际液体体积偏小,所以俯视读数为15mL,实际小于15mL,可假设为14mL,所以加入液体体积为:14mL-11mL=3mL,所以小于5mL.

故答案为:凹液面最低处;小于.

阅读理解

After Mom died, l began visiting Dad every morning before I went to work. He was frail and moved slowly, but he always had a glass of freshly squeezed orange juice on the kitchen table for me, along with an unsigned note reading," Drink your juice." Such a gesture, l knew, was as far as Dad had ever been able to go in expressing his love. In fact, l remember, as a kid I had questioned Mom "Why doesn't Dad love me?" Mom frowned, "Who said he doesn’t love you?" "Well, he never tells me, "I complained." He never tells me either," she said, smiling. " But look how hard he works to take care of us, to buy us food and clothes, and to pay for this house. That's how your father tells us he loves us. "

I nodded slowly. I understood in my head, but not in my heart. l still wanted my father to put his arms around me and tell me he loved me. Dad owned and operated a small scrap (片) metal business, and after school I often hung around while he worked. Dad handled scrap steel into a device that chopped it as cleanly as a butcher chops a rack of ribs. The machine looked like a giant pair of scissors, with blades thicker than my father's body. If he didn’t feed those terrifying blades just right, he risked serious injury. "Why don' t you hire someone to do that for you?" Mom asked Dad one night as she bent over him and rubbed his aching shoulders with a strong smelling liniment. "Why don’t you hire a cook?" Dad asked, giving her one of his rare smiles.

Many years later, during my first daily visit, after drinking the juice my father had squeezed for me. l walked over, hugged him and said, "I love you, Dad." From then on I did this every morning. My father never told me how he felt about my hugs, and there was never any expression on his face when I gave them.

小题1:What would be the best title for the passage?

A.My father never loved me

B.I just couldn't understand my father

C.My hard-working father

D.Silent fatherly love小题2:The author’s father always prepared a glass of freshly squeezed orange juice for him because____.

A.that was the author's favorite

B.that was a gesture of love

C.the author was always complaining

D.he was sure the author would be thirsty小题3:The author’s father didn’t hire a helper because________.              .

A.he wanted to save money

B.his job required high skills

C.his job was too dangerous

D.he was not good at communicating with others小题4:We may infer from the passage that _______.

A.the author's father lacked a sense of humor

B.the author's-father didn't love him very much

C.the author quite understood his father as time went on

D.the author's father was too strict with him

问答题 简答题