问题补充：
The word “sharp” can be _1_ to describe many different things in your home, classroom, and places of work. In this chapter, the writer _2_sharp pencils, meaning pencils with a very fine _3_.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 _4_ kind of point,_5_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 _6_ sharp or rounded _7_ 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, _8_.Sharp knives, scissors, and tools are_9_to use. They cut things easily and quickly, without effort.
“Sharp” can be used to describe the edges of furniture and _10_some containers. For example, the edge of a table or desk can be _11_.In addition; we can describe the edge of _12_ open can as sharp. The top of a can is sometimes sharp_13_ to cut your hand. A piece of _14_ from a broken jar or bottle is_15_very sharp.
_16_we sometimes use “sharp” to describe people. A person who appears sharp is very well _17_.A person who is sharp, on the other hand, is intelligent, smart, and_18_ learn and understand.
To summaries, “sharp” can be used to describe many kinds of _19_ 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 _20_ it can be used in many different ways.
1. A. written B. used C. seen D. taken
2. A. talks aboutB. takes care of
C. doesn like to mentionD. 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. so B. as soon C. such D. or
6. A. either B. neither C. too D. very
7. A. working B. which are C. is D. spending
8. A. too B. even C. either D. ever
9. A. difficult B. easy C. interesting D. clean
10. A. for B. with C. of D. at
11. A. seen B. sharp C. smooth D. hard
12. A. an B. a C. the D.\
13. A. so as B. in order C. so that D. enough
14. A. news B. glass C. information D. advice
15. A. again B. quite C. rather D. ordinarily
16. A. However B. Finally C. Therefore D. In this way
17. A. prepared B. dressed C. mannered D. served
18. A. easy to B .is to C. to D. quick to
19 .A. funny things B. knivesC. objects D. containers
20. A. because B. even if C. though D. not only1---20 BACDC ADABC BADBD BBDCA
答案：
(答案→)1---20 BACDC ADABC BADBD BBDCA
解析：
1be used to表示“被用来”。答案为B。
2.A表示“讨论，谈论”。答案为A。
3.根据意思，要有一个好的笔头。答案为C。
4.a certain kind of表示“某一种”。答案为D。
5.such as表示“比如，像”。答案为C。
6.either …or是一个固定结构，表示“要么……要么”。答案为A。
7.固定结构。答案为D。
8.too，用在肯定句中，表示“也”。答案为A。
9.be easy to use表示“很容易用”。答案为B。
10.of furniture and of some containers是并列结构。答案为C。
11.整篇文章就是关于“sharp”。答案为B。
12.open是以元音开头，所以用an。答案为A。
13.sharp enough to do表示“锋利得足够……”。答案为D。
14.一个玻璃碎片……。答案为B。
15.根据意思来填。答案为D。
16最后，用“sharp”来形容人。答案为B。
17.穿着很好的人。答案为B。
18.quick to learn表示“学得很快”。答案为D。
19.objects表示“物体”。答案为C。
20.在这里是“因果关系”。答案为A。
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