题目

某电热水壶及其铭牌如图所示，小明为了测量该电热水壶的实际功率和加热效率，进行了如下实验：关掉家里所有用电器，将该电热水壶装满水，接通电热水壶，测得壶中水温度从25℃上升到35℃所用的时间为50s，同时观察到家中“220V 10（40）A 3200imp/kW•h”的电子式电能表的指示灯闪烁了80imp，水的比热容c＝4.2×103J/（kg•℃）．请结合本次实验记录的数据，回答以下问题： （1） 除电子式电能表外，小明还需下列哪些器材完成上述两个测量（选填Once upon a time there was a child ready to be born. So one day he   1   God, “They tell me you are sending me to   1   tomorrow but how am I going to live there being so   3  and helpless?” God replied, “Among the many   4  , I chose one for you. She will be   5  for you and will take care of you.” But the child wasn’t   6   he really wanted to go. “But tell me, here in Heaven, I don’t do   7   but sing and smile, that’s  8   for me to be happy.” “Your angel will sing for you and will also   9   for you every day. And you will   10   your angel’s love and be happy.” “And   11   am I going to be able to understand when people talk to me.” The child continued, “if I don’t know the   12   that men talk?” God patted him on the head and said, “your angel will tell you the most beautiful and sweet   13   you will ever hear, and with much   14   and care, your angel will teach you how to   15  .” “And what am I going to do when I want to talk to you?” “Your angel will place your   16   together and will teach you how to pray（祈祷）.” “I’ve heard that on earth there are bad men, who will   17   me?” “Your angel will defend you even if it means   18   her life!” And then God   19   the child on the shoulder and said, “Your angel’s name is not   20   to remember. You will simply call her Mommy.” 1. A. asked                    B. answered                  C. taught                       D. told 2. A. heaven                  B. hell                           C. earth                        D. space 3. A. big                        B. small                        C. strong                      D. stupid 4. A. nurses                   B. doctors                     C. teachers                    D. angels 5. A. hiding                   B. waiting                     C. heading                     D. voting 6. A. sure                      B. urgent                       C. conscious                 D. impressive 7. A. anything                B. something                 C. everything                 D. nothing 8. A. much                    B. little                          C. few                          D. enough 9. A. clear                     B. dive                          C. smile                        D. react 10. A. damage               B. feel                           C. govern                      D. resign 11. A. when                   B. why                         C. how                         D. whether 12. A. language              B. meaning                    C. topic                        D. politics 13. A. poems                 B. stories                      C. arguments                 D. words 14. A. strength               B. patience                    C. warning                    D. thinking 15. A. sing                    B. dance                       C. speak                       D. paint 16. A. hands                  B. feet                          C. arms                        D. legs 17. A. replace                B. convert                     C. educate                     D. protect 18. A. burying               B. risking                      C. experiencing              D. attacking 19. A. hit                       B. ruined                       C. touched                    D. cleaned 20. A. hard                    B. easy                         C. strange                     D. convenient