The word “sharp” can be __ to describe many different things in your home, classroom, and places of work. In this chapter, the writer __sharp pencils, meaning pencils with a very fine __.The writer does not like dull pencils. 。

We can also use “sharp” to describe the blades of knives. Knives also have points. We can use “sharp” to describe a __ kind of point, such as the sharp points of kitchen and steak knives. Scissors have blades, too, and we can describe these blades as sharp or dull. Furthermore, the points of scissors are __ sharp or rounded spending on the kind of scissors. Some tools, such as saws, scrapers, and garden tools, also have blades. We can use the words “sharp” and “dull” to describe the blades of these tools, too. Sharp knives, scissors, and tools are__to use. They cut things easily and quickly, without effort.?

“Sharp” can be used to describe the edges of furniture and __some containers. For example, the edge of a table or desk can be __.In addition; we can describe the edge of __ open can as sharp. The top of a can is sometimes sharp__ to cut your hand. A piece of __ from a broken jar or bottle is ordinarily very sharp.

__we sometimes use “sharp” to describe people. A person who appears sharp is very well __.A person who is sharp, on the other hand, is intelligent, smart, and__ learn and understand.

To summarize, “sharp” can be used to describe many kinds of __ that have blades, points, and edges. When we used it to describe people, it can mean nice looking, well dressed, or intelligent. It is an expensive word because it can be used in many different ways.

1.A. written???????? B. used???????? C. seen???????? D. taken

2.A. talks about???? B. takes care of?? C. doesn't like to mention??? D. makes up his mind to

3.A. sharp???????? B. color????????? C. point????????? D. edge

4.A. some???????? B. any????????? C. only????????? D. certain

5.A. either???????? B. neither???????? C. too?????????? D. very

6.A. difficult?????? B. easy?????????? C. interesting????? D. clean

7.A. for?????????? B. with?????????? C. of???????????? D. at

8.A. seen???????? B. sharp?????????? C. smooth??????? D. hard

9.A. an?????????? B. a????????????? C. the??????????? D. /

10.A. so as???????? B. in order???????? C. so that??????? D. enough

11.A. news???????? B. glass?????????? C. information??? D. advice

12.A. However???? B. Finally???????? C. Therefore????? D. In this way

13.A. prepared????? B. dressed???????? C. mannered????? D. served

14.A. easy to?????? B .is to??? ??????? C. to???????????? D. quick to

15.A. funny things?? B. knives???????? C. objects????????? D. containers

（C）用所给词的适当形式填空，每空只填一词。

单词拼写：根据句意及首字母完成下列各句(10分)。

1.I’m l____(大声的) than the other kids in my class.

2.Although the little girl is only three years old,she speaks c______(清晰地).

3.You can buy this bike c_____(便宜) because it’s a second-hand bike.

4.We should held our parents do h_____(家务事) in our free time.

5.Mo Yan is a great Chinese w_____(作家).

6.Our city looks w______(精彩的) from the top of the hill.

7.It’s a good habit to wash your hands before m____(饭).

8.---What do you you do on weekends?---I o_____(经常) watch TV.

9.I think you can do the job better with l____(较少) money and fewer people.

10.Because of the bad weather,we can see nothing b_____(在......下面).

Nearly all our food comes from the soil（土地）. Some of us eat meat, of course, but animals live on plants. If there were no plants, we would have no animals and no meat. So the soil is very necessary for life. The top of the ground is usually covered with grass or other plants. There may be dead leaves and dead plants on the grass. The waste matter（粪）from animals also falls on it.
All soil needs food. If we do not give it any, the plants will be weak. Farmers found that animals’ waste is the best food for the soil, but chemical fertilizers（化肥）are also very useful. The same crop（庄稼）should not be grown in the same place every year, it’s better to have a different crop. A change of crop and the use of a good fertilizer will keep the land good.
【小题1】Which of the following is true?

Wind is the great maker of waves. There are exceptions (例外), such as the tidal (潮汐的) waves sometimes caused by earthquakes under the sea. But the waves most of us know are caused by winds blowing over the sea .
Now let’s learn some physical (自然地理学的) things about it. A wave has height, from low point to high point . It has length (长度)--the distance from this high point to that of the following wave. The period of the wave means the time it takes for succeeding high points to pass a fixed point. None of these things stays the same--for all depend upon (依靠)the wind, upon the depth (深度) of the water and many other matters.
The water that makes up a wave does not advance with it across the sea. Each drop of water turns around in a little circle with the passing of the wave, but returns very nearly to its original position (原先的位置). And it is lucky that this is so. For if the huge groups of water that make up a wave really moved across the sea, sailing would be impossible. If we want to find the speed of a wave, we may use the following way : Speed =" wavelength" × frequency (频率).
Here, wavelength is the distance between two high points , frequency means the number of cycles per second
【小题1】What causes waves?