以下是if语句的基本形式: if(表达式)语句 其中“表达式”A.必须是逻辑表达 发布时间:2017-06-22 16:41 │ 来源:www.tikuol.com 题型:单项选择题 问题: 以下是if语句的基本形式: if(表达式)语句 其中“表达式”A.必须是逻辑表达式B.必须是关系表达式C.必须是逻辑表达式或关系表达式D.可以是任意合法的表达式
题型:单项选择题 完型填空。(本题10小题,每小题1分,共10分)Welcome to Wenzhou 1, everyone! Let me 2 you many different animals today. Listen! Many 3 are singing in the tree. Can you see some monkeys? They are clever and like 4 bananas. Look! There are many koalas. They 5 from Australia. They are quiet, 6 and cute. Children like them. Oh, there’s a tiger in the cage(笼子)7 the tree. It eats a lot of 8 every day. I like pandas best 9 they live only in China. Animals are our friends, we should take care of (照顾)them. I’m 10 you’ll have a good time here. 小题1:A.hospitalB.zooC.farmD.school小题2:A.talkB.sayC.tellD.speak小题3:A.giraffesB.lionsC.chickenD.birds小题4:A.eatB.eatsC.eattingD.eating小题5:A.comesB.comeC.is comeD.is小题6:A.friendlyB.scaryC.dangerousD.bored小题7:A.underB.onC.inD./小题8:A.grassB.leavesC.meatD.bamboos小题9:A.andB.becauseC.soD.but小题10:A.sorryB.readyC.sureD.good 查看答案
题型:单项选择题 两根由同种材料制成的均匀电阻丝A、B串联在电路中,A的长度为L,直径为d;B的长度为2L,直径为2d,那么通电后在相同的时间内产生的热量之比 [ ]A.QA:QB=1:2 B.QA:QB=2:1 C.QA:QB=1:1D.QA:QB=4:1 查看答案
题型:单项选择题 下列检验和区分物质的方法正确的是[ ]A.用酚酞试液检验氢氧化钠溶液中是否含碳酸钠B.用水区分氯化钠和硝酸铵固体C.用石蕊试液检验生石灰中是否混有熟石灰D.用燃着的木条区分二氧化碳和氮气 查看答案