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1、Unit 5A.1.drop 2.voice 3.add.to4.through5.valuable6.formsB.1.salt 2.made up of3.fresh4.part of5.continues6.returnA1.2.Theres no cooking oil.3.Theres a lot of salt.4.Theres a little meat./Theres not much meat.5.Theres a lot of cheese.6.There are no eggs.7.Theres a lot of milk.8.There are a lot of app
2、les.9.There are a few tomatoes./There are not many tomatoes.10.There are a few onions./There are not many onions.A2.1.How much;too little/not enough2.How many;too many3.How many;too few/not enough4.How much;enough5.How much;too little/not enough6.How many;enough7.How much;too muchB.1.enough 2.too fe
3、w 3.How many4.enough 5.How much 6.too much7.too little 8.How much9.enough10.too many 11.no 12.a lot ofA.1.drop 2.bathroom 3.off 4.tap 5.cloud 6.added 7.chemicals 8.pipes 9.valuable 10.polluteB.1.T2.F3.F4.FC.1.Its 6,300 kilometres long.2.It runs through the very heart of China.3.Hundreds of millions
4、of people depend on it.4.It faces the problem of pollution.5.They are getting factories to stop pouring waste into the river.F (Students own answers)A1.1.b2.a 3.cA2.1.F2.F3.T4.TB.1.6,440 kilometres 2.240 kilometres 3.Peru 4.Brazil 5.the Atlantic Ocean 6.more water7.2,000 8.fish9.forests 10.different
5、11.strange plants 12.make medicine C.1.More than three million tourists visit Venice every year.2.More than 400 bridges connect the islands in Venice.3.Because there are more than 177 canals in the city.4.They can see the city of Venice on a gondola.5.They can to keep part in the Venice Carnival in
6、April or the Venice Film Festival in August.How to make noodle soupFirst,put five cups of water into a pot.Then boil the water and put 100 g of noodles into the boiling water.Next,add one egg,two carrots and a few prawns.Then stir the noodles.In about ten minutes,add seasoning,spring onions and a pi
7、ece of ginger.Finally,serve the noodle soup in a big bowl.A.1.take a shower 2.have no food to eat3.cant cook food 4.cant put out firesB.1.Because when rainwater washes over this litter,it becomes polluted.This polluted water flows into rivers and the sea.2.We should not throw paint,oil or litter dow
8、n our sink or toilet.3.We should pick it up.4.We should take them to specified places to throw them away.5.We should not throw litter on them,and should join a group to help clean them.C.1.d2.a3.b4.c5.b6.b7.c8.aD1 (Students own answers)D2 (Possible answer)In the house,we can turn off the tap while we are brushing our teeth or washing the dishes.We can take showers instead of baths.We can use the washing machine only when it is full.We can fix dripping taps to save water.On farms,we can also save water by watering crops and vegetables early in the morning or late in the afternoon.