PART Cloze (10%)
Directions: For each numbered blank in the following passage, there are four choices marked A, B,C, and D. Choose the best one and mark your answer on the ANSWER SHEET。
It is difficult to imagine what life would be like without memory. The meanings of thousands of everyday perceptions, the bases __21__ the decisions we make, and the roots of our habits and skills are to be __22__ in our past experiences, which are brought into the present __23__ memory.
Memory can be defined as the capacity to keep __24__ available for later use. It includes not only "remembering" thing like arithmetic or historical facts, but also any change in the way an animal typically behaves. Memory is __25__ when a rat gives up eating grain because he has sniffed something suspicious in the grain pile. Memory is also involved when a six-year-old child learns to swing a baseball bat.
Memory __26__ not only in humans and animals but also in some physical objects and machines. Computers, for example, contain devices for storing data for later use. It is interesting to compare the memory storage capacity of a computer __27__ that of a human being . The instant access memory of a large computer may hold up to 100,000 “words” ready for __28__ use. An average American teenager probably recognizes the meanings of about 100,000 words of English. However, this is but a fraction of the total 29 of information , which the teenager has stored. Consider, for example, the number of facts and places that the teenager can recognize on sight. The use of words is the basis of the advanced problem solving intelligence of human beings. A large part of a person's memory is in terms of words and __30__ of words.
21. A. of B. to C. for D. on
22. A. kept B. found C. sought D. stored
23. A. by B. from C. with D. in
24. A. experiences B. bases C. observations D.information
25. A. called B. taken C. involved D. included
26. A. exists B. appears C. affects D. seems
27. A. to B. with C. against D. for
28. A. progressive B. instructive C. instant D. protective
29. A. deal B. number C. mount D. amount
30. A. combinations B. corrections C. co-ordinations D. collections
解析：
21.答案选A。此句为平行结构，根据上下文 “the meanings of thousands of everyday perceptions" , "the roots of our habits and skills" ,应该用of。
22．答案选D。此题是对词汇的考查，四个选项意思分别为：A项。 “保留，保存”；B项“发现”；C项“寻找，找到，得到”；D项“储存”。
23．答案选A。此句是被动语态，应该用钾引出施动者。
24．答案选D。四个选项的意思分别为；A项“经历”；B项“基础”：C项“观察，试验”；D项“信息”。从通篇看，D项正确。
25．答案选C。从下文的提示看应为involved。
26．答案选A。从此旬的介词in的提示看应为exist。
27．答案选B。从本句的compare的提示看是to或with，但是compare to意思是“把……比作”；compare with意思为“比较。。
28．答案选C。此句的instant-access提示应用instant。
29. 答案选D。of information是此处应填词的定语，因此用amount。
30．答案选C。此句的四个选项意思分别为：A项“结合”;B项“纠正，改正”；C项“协调,调整”，D项“集合”。根据题意，C项最合适。