电压是用字母 _________ 表示，它的单位是 _________ ，单位符_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题填空题

电压是用字母 _________ 表示，它的单位是 _________ ，单位符号是 _________ ．电阻是用字母 _________ 表示，它的单位是 _________ 单位符号是 _________ ．

答案

U，伏特，V；R，欧姆，Ω．

问答题

小红在一次长跑测试中，前400m用时90s，后400m用时110s，求小红的平均速度是多少？

完形填空

It was a cold winter. The day my husband fell to his death, it started to snow, just 36 any November day. His 37 , when I found it, was lightly covered with snow. It snowed almost every day for the next four months, while I sat on the couch and watched it 38 . One morning, I walked slowly 39 and was surprised to see a snow remover clearing my driveway and the bent back of a woman clearing my walk. I dropped to my knees and crawled back upstairs, 40 those good people would not see me. I was 41 . My first thought was, how would I ever 42 them? I didn’t have the 43 to brush my hair, 44 clear someone’s walk.
Before Jon’s death, I felt proud that I 45 asked for favors. I identified myself by my competence（能力） and 46 . So who was I if I was no longer capable? How could I 47 myself if I just sat on the couch every day and watched the snow fall?
Learning to receive the love and 48 from others wasn’t easy. Friends cooked for me and I cried. Finally, my friend Kathy said, “Mary, cooking for you isn’t a 49 for me; it makes me feel good to be able to do something for you.”
Over and over, I heard 50 words from the people who supported me during those 51 days. One wise man told me, “You aren’t doing nothing because being fully open to your 52 may be the hardest work you will ever do.”
I am not the person I 53 was, but in many ways I have changed for the 54 . I’ve been surprised to learn that there is incredible freedom coming from 55 one’s worst fear and walking away whole. I believe there is strength, for sure, in accepting a dark period of our life.

B．disappointed

A．stand alone

B．leave alone

D．uncertainly

A．intelligence

B．independence

D．qualification

C．contribution

C．considerate