一。 学习目标aims and demands
1、学习生词和短语。
2、谈论有关水资源的话题。
二．学法指导how to study
1、预习unit2topic2section d,并对语言点、难点做出标记；
2、学习导学案，并完成导学案上的练习题。
三、自主预习 prep i、翻译下列单词并标上词性：
1、不足2、避免3、提到。
4、发现5、再次使用6、缺水。
ii、在课本中找出下列短语划在书上并翻译。
1.大量的___2.从海水里提取盐___3.水缺乏的问题。
4.避免某事（避免做某事。
5发现再使用水的方法6.在这个领域。
7.一天天8.被……覆盖。
9缺乏10.直接饮用___
11.使用……做某事___
、翻译句子。
1、我们怎样避免严重的水缺乏呢？
2、我们应该保护水资源，不污染它们。
3、人们对水的需求在一天天增长。
4、虽然世界饥饿，可它更缺水。
5、我们不能用海水灌溉植物或直接饮用。
5、目标检测
i、单词拼写。
we know砍倒) trees does great harm to our environment.
2没人) her family has been to college.
3. some animals are even处于危险中) of disappearing completely.
4. in the area, about二十分之十一) of the rubbish can’t be recycled.
greenhouse effect涉及到) carbon dioxide.
ii、单项选择。
) 1. _of them has a bike. a. noneb. somec. both
) 2. that __true, but i don’t think most people will believe it.
a. feels b. sounds c. hears
) 3. could you tell me how long it __to fly to london ?
a. costs b. spends c. takes
) 4. the dress fits me well, _i don’t want to buy it because it’s too expensive. a.
so b. and c. but
) 5. -did you use to read books in bed ?-no, i didn’t. that’s __eyes.
a. harm b. bad for c. helpful to
) 6. the flood couldn’t stop the soldier __towards the most dangerous places. a.
from moving b. for moving c. to move
) 7. i don’t think he is __to move the big box.
a. enough strong b. strongly enough c. strong enough
) 8. _on the grass or pick the flowers.
a. not to step b. no step c. don’t step
)9. there was a rainstorm yesterday. the flood __the old bridge over the river.
a. washed away b. went away c.
put away
) 10. _sheep are eating grass at the foot of the hill.
a. two hundreds of b. hundreds of c. two hundreds
) 11. you’d better dig __hole.
a. two-meters-deep b. two meters deep c. a two-meter-deep
) 12. _exercise you take, _you will be.
a. the more, the healthier b. the more, the more healthily c. more, healthier
) 13. she should stop __she has a headache because she __too long.
a. to work, was reading b. working, has read c. to work, has read
) 14. the level of the sea is rising because of __
a. the greenhouse effectb. changes in the climate
c. the ozone layer in the sky
iii、完形填空。
the computer plays an important part in our everyday life. it is one of the great _1__ in the world in the twentieth century. it works for us not only at home, in the offices, in big shops, _2__ at schools.
today it is used __3__ many ways. it really brings the world large wealth (财富) and happiness.
the first computer in the world was __4_ enid. it was built in america in 1946. it was large and he**y.
_5__ it was born, it has been developing very fast. until now it has gone __6__ four periods（时期，阶段）and changed a lot. there’re many kinds of computers.
computers are getting smaller and smaller and computing faster and faster. it becomes more and more __7_.
the computer can do most of the things for the people. it can help us to _8 _ about the real world more quickly, to learn _9_ we want to learn and to think for ourselves. _10_ a student in the twenty-first century, you must work hard at it.
)1 a. inventions b. discoveriesc. inventors
)2 a. alsob. but alsoc. too
)2. a. inb. toc. by
)4. a. foundb. inventedc. called
)5. a. forb. sincec. when
)6. a. byb. acrossc. through
) seriousb. harmfulc. helpful
) knowb. tellc. talk
) whatb. thatc. who
) forb.
vi、阅读理解
“well, we’re in our new house. let’s get a new pet to go along with it,” mrs. brown said to her husband.
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