正确答案: C
1∶1
题目:据恩施州旅游部门人士透露,为增加看点,吸引人气,有关方面正在策划在恩施大峡谷景区开发多种形式的极限运动项目,攀岩比赛就是其中的一项。在一次攀岩比赛中,甲、乙两个运动员的质量之比是9:8,甲用45min完成比赛,乙用40min完成比赛,则甲乙两人攀岩时克服重力做功的功率之比是: ( )。
解析:C
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举一反三的答案和解析:
[单选题]Don’t put off today’s work for tomorrow. I mean, today’s work _____ today.
must be done
[单选题]下列对甲、乙两文的理解分析错误的一项是( )(2分)
甲、乙两文在写举荐人才时,均使用了细节描写的方法,使人物在举手投足间本质尽显
[单选题]28. From the second paragraph(段) ,we know the modern trains have_________ .
comfortable seats and dining cars
解析:28.c[解析】从文章第二段最后一句可知.
[单选题]燃烧是人类最早利用的化学反应之一,人类已有几十万年的利用燃烧反应的历史。www.zk5u.com中考资源网燃烧需要具备的条件是①可燃物②氧气或空气③温度达到着火点
①②③
[单选题]
took hold of
[单选题]下列事例中,利用大气压作用的是
小王将新鲜空气吸入肺里 B.医生用针筒把药水推入病人肌肉中
[单选题]—It’s very ________ of you to work out the problem for me. 学科网 —That’s all right.
—It’s very ________ of you to work out the problem for me.
—That’s all right.
kind B.clever C.necessary
[单选题]BMy name is Tom Mallory. I'm English and I'm 13. I'm a student in Brookes School. I like music and sports very much. I can play twoinstruments :the violin and the piano. I can play them very well.
England
解析:26.B【解析】根据第二句可得知。
[单选题]10.Would you mind_________ the window?
opening
解析:10.B【解析】mind"介意,反对”,常用于疑问句、否定句或条件句中,其后跟名词或动名词,不能跟不定式。