1、4. _，笑问客从何处来。5. _，家祭无忘告乃翁。（）奥数天天练1.小学六年级奥数天天练：2.小学六年级奥数天天练：A，B，C三地依次分布在由西向东的同一条道路上，甲，乙，丙分别从A，B，C同时出发，甲、乙向东，丙向西；乙，丙在距离B地18千米处相遇，甲，丙在B地相遇，而当甲在C地追上乙时，丙已走过B地32千米那么，AC间的路程是_千米英语天天练In the old days，in London，the smog was verythick. Car and bus drivers 1 to drive very slowly they could 2 seethe.road in fron
2、t of them even during thedaytime. People did not like going out in thesmog. 3 they had to go out，they wore smog masksover theirfaces. In December 1952，a very，4 dark cloud came downover.London.It was the 5 smog Londoners had everhad. 6 of it was bad factorysmoke. Nearly fifty people died in roadaccid
3、ents. But many more people becameunhealthy.The smog was very 7 for old people andchildren.One man said，”The streets were almost 8 because people stayed at home as much aspossible.The air was very thick，and you could almost cut it with aknife.”After three weeks，the smog began to 9 .But in the followi
4、ng weeks and months，over 4000 people died as a 10 of thesmog.（ ）1A.hurriedB.stayedC. hadD.minded （ ）2.A.alreadyB.easilyC.luckilyD. hardly （ ）3A.IfB.SoC.ThoughD.Whether （ ）4.A.thinB.thickC.lightD.clear （ ）5.A.furthestB.hottestC.worstD.nicest （ ）6.A. MuchB.ManyC.FewD. A few （ ）7.A. quietB.dangerousC.favoriteD.weak （ ）8.A.busyB.emptyC.enjoyableD.dirty （ ）9.A.arriveB.shineC.forgetD.lift （ ）10.A.beginningB.partC.usualD.result
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