Unit 4Global warmingA级:基础巩固.单词拼写1.Large numbers of plastic bags are c every day,which has caused “White Pollution”.答案:consumed2.I have never (同意) to the view that school days are the happiest days of your life.答案:subscribed3.Its cheaper to buy goods in q.答案:quantity4.She is as m as a lamb and never gets angry.答案:mild5.Im sure that all the people are o to war and love peace.答案:opposed6.The a of the three numbers 7,12 and 20 is 13,because the total of 7,12 and 20 is 39,and 39 divided by 3 is 13.答案:average7.Its not permitted to wear (随便的)clothes in office hours.答案:casual8.There is a growing (趋势)for people to work at home instead of in offices.答案:tendency9.Countless people have made great (贡献)to the development of our nation.答案:contributions10.A balanced diet is essential for healthy (成长).答案:growth.句型转换1.It rained heavily,as a result,the football match had to be abandoned.The football match had to be abandoned the heavy rain.答案:as a result of2.Large quantities of waste land have been converted to fine farmland. waste land been converted to fine farmland.答案:A large quantity of;has3.When we compare the earth with the Mars,we are amazed that how similar they both are.When the earth with the Mars,we are amazed that how similar they both are.答案:comparing4.The number of students average 50 each class in our school. Each class in our school has 50 students.答案:an average of5.Many members of the council opposed the building of the luxury houses in the centre of the city.Many members of the council the building of the luxury houses in the centre of the city.答案:are opposed toB级:能力提升.阅读理解阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。ARisky but fun in LaosSometimes you have to go somewhere risky to see the best views.Or at least,to a place that challenges you.This is what happened when I went to Laos in Southeast Asia.Its a small country,and people dont have much money.But I had heard promises of beautiful scenery,great food,and friendly people.Id also heard that Id have a chance to fly through the jungle.First I landed in Luang Prabanga beautiful,small city with a wonderfully slow way of lifeand met up with my friends.We saw some great sights,including waterfalls and many Buddhist temples and statues.From there,we traveled south to Paksong,where the jungle was located.To get there,however,we had to go on what I described as an “overnight coach(长途客车)ride of death”.On the trip,my friend David was very sick from some bad food hed eaten in Luang Prabang the night before.My friend Calvin and I kept looking at each other in fear when our coach tried to turn around very dangerous corners on a road on the side of a cliff,without falling off.The coach kept making unexplained noises.We were all scared.So we were all quite tired when we finally arrived at Treetop Explorer,the company that would take us to the jungle.But it was worth it when we finally started zip-lining(滑索道)through the trees.I put myself in a harness(系带)before I took my first jump on the wire(索道)to get from tree to tree,and although I wasnt really flying,it really felt like I wasI forgot my fear of heights when I saw the rivers and trees of the jungle go past at a great speed underneath me.We spent two incredible days in the jungle.I headed home a few days after this,but my time flying through the green jungle with great friends will stay with me forever.1.What attracted the author to Laos?a.beautiful sightsb.delicious foodc.rich peopled.flying through the junglee.a risky coach rideA.a,b,cB.a,b,dC.b,d,eD.c,d,e解析:细节理解题。从“But I had heard promises of beautiful scenery,great food.”和“.Id also heard that Id have a chance to fly through the jungle.”可知a,b,d正确。从“Its a small country,and people dont have much money.”可知C错误;作者出发之前并没有预料到旅途会那么risky,e错误。答案:B2.When the author and his friends took the overnight coach,.A.they enjoyed the unique travel experienceB.the beautiful scenery they saw was worth itC.they were in fear of falling off a cliffD.they decided to stop the coach halfway解析:细节理解题。从“My friend Calvin and I kept looking at each other in fear when our coach tried to turn around very dangerous corners on a road on the side of a cliff,without falling off.”可知C项正确。作者和朋友都很害怕,根本没有enjoy这段旅程,A项错误;文中没有提到路上有什么好风景,B项错误;作者他们也没有半途而废,D项错误。答案:C3.How did the author feel about his trip to Laos?A.Challenging but unforgettable.B.Dangerous but helpful.C.Boring and unpleasant.D.Expensive and not worth it.解析:观点态度题。从“Or at least,to a place that challenges you.This is what happened when I went to Laos in Southeast Asia.”和“We spent two incredible days in the jungle.”可知A项正确。答案:A4.What impressed the writer most when traveling in Laos?A.Overnight coach ride of death.B.Beautiful scenery.C.Great food and old temples.D.Flying throug