水果店运进200箱苹果和300箱梨,每箱梨重a千克,每箱苹果重b千克.这个商店共 发布时间:2017-05-03 01:01 │ 来源:www.tikuol.com 题型:填空题 问题: 水果店运进200箱苹果和300箱梨,每箱梨重a千克,每箱苹果重b千克.这个商店共运进苹果______千克,a-b表示______,运进的苹果比梨少______千克.
题型:填空题 下面是一些命题的叙述语(A、B表示点,a表示直线,α、β表示平面)正确的是( )A.∵A∈α,B∈α,∴AB∈α.B.∵a∈α,a∈β,∴α∩β=a.C.∵A∉α,a⊂α,∴A∉a.D.∵A∈α,a⊂α,∴A∉a. 查看答案
题型:填空题 Learning ComputersThis twelve-hour course is for people who need to learn about computers. You will learn what computers are, what they can and can't do and how to use them. Course fee(费用):$ 75Jan. 4,7,11,14,18,21 Wed. &Sat. 9: 00—11: 00 a. m.Zhang Hua is a professor from Beijing University. He has over twenty years of experience in the computer field.TypingThis course is for those who want to learn to type. You are tested first and then you can practice at one of eight different skill levels. This lets you learn at your own speed. Each program lasts 20 hours. Bring your own paper.Course fee: $ 125Two hours each evening for two weeks. New classes begin every two weeks. This course is taught by a number of professional teachers.Language StudyHave you already tried to improve your English and failed? Do you want to learn English well? Come and this three-month course will help you make it. Course fee: $ 130 Moil & Wed. 2:00—5:00 p.m. All the teachers are from English-speaking countries.根据表格内容,选择最佳答案,并在答题卡上按要求作答。小题1:If you choose the Learning Computers course,you'll have classes .A.from Monday to FridayB.on Wednesday and SaturdayC.on January 4,7,12,15D.in the afternoon every day小题2:From the ads we know that Zhang Hua .A.is a teacher from Beijing UniversityB.has no experience in the computer fieldC.can type very wellD.comes from an English-speaking country小题3:If you choose the Typing course, you .A.should have a test firstB.needn't bring your own paperC.can't learn at your own speedD.should pay $ 115小题4:Mr. Black works in the day and only has time in the evening, he can only choose the course.A.Learning ComputersB.TypingC.Language StudyD.None of the above小题5:The Language Study course will last .A.twelve hoursB.two weeksC.three monthsD.three weeks 查看答案