经过加热，最易丧失的是（ ）。A．维生素A B．维生素B C．维生素C 发布时间：2017-12-14 06:50 │ 来源：www.tikuol.com 题型：单项选择题 问题： 经过加热，最易丧失的是（ ）。A．维生素A B．维生素B C．维生素C D．维生素D
题型：单项选择题 完形填空。 Most adults once studied at school, had classes and did homework every day. The same _1 is goingon at school now. _2_it seems that doing weekend homework is 3_problem for the modern students. All the students should agree that weekend homework should be abolished (取消). It's 4 for themstudying at school five days a week. They have a lot of interests. With homework to do on Saturday and Sunday, when can they find 5 to help around the house, go and see a football or basketball game or a good film, join in family recreations (娱乐), or just have 6 at home? Because of these other activities, the homework can not be finished until _7 . So their weekend homework is usually done in such a hurry that on Monday the 8 teachers often threaten (威胁) to fail whole class of students because they know nothing about the _9 . If there were no weekend homework for the students to do, they would behappy to school on Monday 10_having a good rest and to learn what the teachers teach.( )1.A.thing ( )2.A.Also ( )3.A. no ( )4.A. not enough ( )5.A. friends ( )6.A. a rest ( )7.A. Monday afternoon( )8.A. pleased ( )9.A. lesson ( )10.A. until B. school B. But B. another B. enough B. time B. an exam B. Saturday afternoon B. sorry B. games B. when C. class C. Still C. one C. no good C. places C. a lesson C. Friday night C. unhappy C. interests C. before D. homework D. Though D. other D. no use D. money D. a picnic D. Sunday night D. not worried D. activities D. after 查看答案
题型：单项选择题 某汽车销售公司6月份销售某厂家的汽车，在一定范围内，每部汽车的进价与销售量有如下关系：若当月仅售出1部汽车，则该部汽车的进价为27万元，每多售出1部，所有售出的汽车的进价均降低0.1万元/部，月底厂家根据销售量一次性返利给销售公司，销售量在10部以内（含10部），每部返利0.5万元；销售量在10部以上，每部返利1万元．（1）若该公司当月售出3部汽车，则每部汽车的进价为 万元；（2）如果汽车的售价为28万元/部，该公司计划当月盈利12万元，那么需要售出多少部汽车？（盈利=销售利润+返利） 查看答案