22,品红醛试剂又称席夫试剂,是由一种桃红色的三苯甲烷染料与硫酸作用后生成的无色试剂 发布时间:2018-06-25 14:36 │ 来源:www.tikuol.com 题型:判断题 问题: 22,品红醛试剂又称席夫试剂,是由一种桃红色的三苯甲烷染料与硫酸作用后生成的无色试剂。( )
题型:判断题 菱铁矿的主要成分是FeCO3。下列说法正确的是[ ]A.FeCO3中Fe、C、O元素的质量比是1:1:3 B.FeCO3中Fe、C、O的原子个数比是56:12:16 C.FeCO3的相对分子质量是56+12+16 D.FeCO3中Fe元素的质量分数是×100% 查看答案
题型:判断题 There are many similarities between the teacher’s work and the actor’s. However, the fact that a good teacher has some of the gifts of a good actor __1__ mean that he will indeed be able to act well on the stage; for there are very important differences __2__ the teacher’s work and the actor’s work. The actor has to speak words which he has learned __3__; he has to repeat exactly the same work each time he plays a certain part; __4__his movements and the way he uses his voice are usually fixed __5__. What he has to do is to make all these carefully learned words and actions seem natural on the stage. The good teacher works in __6__ different way. His audience takes an active part in his play, they ask and answer question, they __7__ orders, and if they don’t understand something, they say so. The teacher therefore has to suit his act __8__ the need of his audience which is his class. I have known many teachers who were fine actors in __9__ but were unable to play a part in a stage-play because their brains would not keep discipline; they could not keep strictly to __10__.小题1:A.notB.don’tC.doesn’tD.do小题2:A.amongB.withC.fromD.between小题3:A.by mindB.by the mindC.by heartD.by the heart小题4:A.butB.if C.althoughD.even小题5:A.agoB.beforeC.laterD.long小题6:A.very theB.very aC.quite aD.quite the小题7:A.listenB.hearC.keepD.obey小题8:A.forB.withC.toD.of小题9:A.classB.stageC.lifeD.action小题10:A.what another has writtenB.what another had writtenC.that another has writtenD.which another had written 查看答案