题目

工业上生产MnO2和Zn的主要反应有   ① MnO2 + ZnS + 2H2SO4 = MnSO4 + ZnSO4 + S + 2H2O   ② MnSO4 + ZnSO4 + 2H2OMnO2 + Zn + 2H2SO4   下列说法不正确的是   A．①中MnO2和H2SO4都是氧化剂 B．①中析出16 g S时转移1 mol 电子 C．②中MnSO4发生氧化反应             D．硫酸在该生产中可循环使用 答案：AV．完形填空。 Everyone has a place which he remembers most from his childhood(童年)，and so do I．One of the places I remember from my childhood is a_____in the country．It belonged to my parents．I spent my summers in that place_____I was a teenager(青少年)，and now I begin to miss the farm again． It was lovely to_____there．There were a lot of_______--cows，sheep．hens，and naturally dogs and cats．My sister and I______helped to work on the farm．We helped people graze(放牧)sheep or makebread or cheese．I can still remember that on Tuesdays we_____the bread and on Thursdays，the cheese． I love that farm because I______to love animals and not to be afraid of them there．We saw a sheep give birth to its baby there，and we enjoyed staying there to see how lovely the_____sheep was． Now my sister and her son are_____this place．My nephew(侄子)is_______with the place．I hope that he has a good time there and when he is older，he will remember the place as I do．1.A. house B. farm C. village D. park2.A. as soon as B. until C. though D. since3.A. stay B. read C. learn D. leave4.A. flowers B. plants C. animals D. dogs5.A. sometime B. some time C. some times D. sometimes6.A. make B. made C. to make D. making7.A. wanted B. remembered C. learned D. stopped8.A. little B. clever C. colourful D. white9.A. leaving B. painting C. enjoying D. building10.A. worried B. angry C. sad D. pleased