题型：问答题 简答题 最近发现，只含镁、镍和碳三种元素的晶体竟然也具有超导性，因这三种元素都是常见元素，从而引起广泛关注。该新型超导晶体的一个晶胞如图所示，则该晶体的化学式为A．Mg2CNi3B．MgCNi3C．MgCNi2D．MgC2Ni 查看答案
题型：问答题 简答题 “无边落木萧萧下，不尽长江滚滚来。”“芳林新叶催旧叶，流水前波让后波。”这两句诗蕴含的哲理是( )①运动是物质的根本属性和存在方式 ②静止是运动的特殊形式③旧事物和新事物是引起被引起关系 ④发展是新事物代替旧事物A．②③B．③④C．①④D．①② 查看答案
题型：问答题 简答题 下面说法不正确的是[ ]A．三角形的面积一定，底和高成反比例B．长方形的周长一定，长和宽不成比例C．订阅《少年报》的份数和总钱数成正比例 D．因为圆周长C= πd，所以π与d成反比例 查看答案
题型：问答题 简答题 阅读理解。HIGHFIELD COMPREHENSIVE SCHOOLSCHOOL REPORTForm Teacher: G. Baker Pupil's Name: Simon WatkinsTerm: Summer 2010 Form: BSubjectExamClass workCommentsEnglish5961Simon has reached a satisfactory standard but now needs to apply himself with more determination.Mathematics7785Sound work and progress throughout the year. Well done!History4653A disappointing exam result. He is unable to give attention to this subject for long.Chemistry7885His obvious ability in the subject was not fully reflected in his exam work, but I have high hopes for him nevertheless.Physics8694An excellent term's performance. He goes from strength to strength. A born scientist, I feel.Biology5760This time next year he will be taking the 'O' Level exam. He needs to concentrate on the work, not on class conversation.French4146Clearly he didn't bother to revise. His general attitude is far too casual.Physical Education /31Weak. It's time he exercised his body more and his voice less. He should try to work with a team.FORM TEACHER'S REMARKS HEADMASTERBasically satisfactory work and progress I shall be keeping an eye on histhough he will now have realized, I hope, that progress in his weaker subjectsin certain subject areas he needs to make speedy though his success in the sciences isimprovement. most pleasing.1. According to the comments of the Physical Education teacher, Simon _____.A. is too talkative in the classB. likes to work with his classmatesC. doesn't exercise his body at the right timeD. becomes weak because he doesn't exercise at all2. Which of Simon's subjects will attract the headmaster's attention in future?A. Biology and Maths.B. History and FrenchC. English and Chemistry.D. Physics and Physical Education.3. Which of the following statements best describes Simon?A. He has made great progress in language classes.B. His potential has been fully reflected in science classes.C. His grade in maths makes him a born scientist.D. He needs to improve his attitude on certain subjects.4. Based on the school report, which of the following statements is true?A. Simon didn't bother his teacher to revise French.B. Basically, Simon did a good job in science.C. Simon is a determined learner in English.D. Simon is able to pay attention to history for long. 查看答案
