【C5】A．whatB．at whichC．whereD．in which

A．what

B．at which

C．where

D．in which

【B5】

A．what

B．at which

C．where

D．in which

【C5】

A．which

B．where

C．to which

D．that

【C5】

A．on which

B．to which

C．where

D．when

A.C2 on C3

B.C1 on C2

C.C3 on C4

D.C4 on C5

【C5】______

A．which

B．in which

C．when

D．they

In every cultivated language there are two great classes of words which, taken together, comprises the whole vocabulary. First, there arc those words【C1】______which we become acquainted in daily conversation, which we【C2】______, that is to say, from the【C3】______of our own family and from our familiar associates, and【C4】______we should know and use【C5】______we could not read or write. They【C6】______the common things of life, and are the stock in trade of all who【C7】______the language. Such words may be called "popular", since they belong to the people【C8】______and are not exclusive【C9】______of a limited class.

On the other hand, our language【C10】______a multitude of words which are comparatively【C11】______used in ordinary conversation. Their meanings are known to every educated person, but there is little【C12】______to use them at home or in the market-place. Our first acquaintance with these words【C13】______not from our mother's【C14】______or from the talk of our school-mates,【C15】______from books that we read, lectures that we【C16】______, or the more【C17】______conversation of highly educated speakers who are discussing some particular【C18】______in a style. appropriately elevated above the habitual【C19】______everyday life. Such words【C20】______"learned", and the distinction between them and the "popular" words is of great importance to a right understanding of linguistic process.

【C1】

A．at

B．with

C．by

D．through

be is born【C1】______Human brains differ considerably,【C2】______being more able than others.【C3】______no matter how good a brain he has to begin with, an individual will have a low order of intelligence【C4】______he has opportunities to learn. So the second aspect is what【C5】______to the individual--the environment in which he is brought【C6】______. If an individual is handicapped【C7】______, it is likely that his brain will【C8】______to develop and he will【C9】______attain the level of intelligence of which he is【C10】______. The importance of environment in determining an individual's intelligence can be【C11】______by the case history of the identical twins, Tom and Mike. When tile twins were three months old, their parents died, and they were placed in【C12】______foster homes. Tom was mated by parents of low intelligence in an【C13】______community with poor educational【C14】______. Mike,【C15】______was educated in the home of well-to-do parents who had been to college, This environmental【C16】______continued until the twins were【C17】______their late teens,【C18】______they were given tests to【C19】______their intelligence. Mike's IQ was 125, twenty-five points higher than the【C20】______and fully forty points higher than his identical brother.

【C1】

A．for

B．by

C．with

D．in

the person and the conditions in which sleep 【C2】______ . The young may need more sleep than the old, but 【C3】______ eight hours are enough for the 【C4】______ of grown-ups. Some can 【C5】______ with less than this amount but 【C6】______ may need more. Every person knows his own 【C7】______ It is then a matter of how to 【C8】______ it. Sleep should always be 【C9】______ to make one relaxed and ready for 【C10】______ work.

Fresh air is 【C11】______ to sound sleep. It is not 【C12】______ reason for some people to 【C13】______ that it is practical to sleep in the open air. 【C14】______ a person can keep himself warm, 【C15】______ sleeping probably gives the body 【C16】______ complete relaxation.

Ability to sleep is largely a 【C17】______ . Out-of-door 【C18】______ , a good habit of regular 【C19】______ , the avoidance(避免)of late eating, and 【C20】______ are all helpful to sound sleep.

【C1】______

A．wanted

B．expected

C．wished

D．needed

rustrating experience. The lecturer speaks for one or two hours, perhaps【C1】______the talk with slides, writing up important information on the blackboard,【C2】______reading material and giving out【C3】______. The new student sees the other students continuously writing on notebooks and【C4】______what to write. Very often the student leaves the lecture【C5】______notes which do not catch the main points and【C6】______become hard even for the【C7】______to understand.

Most institutions provide courses which【C8】______new students to develop the skills they need to be【C9】______listeners and also note-takers.【C10】______these are unavailable, there are many useful study-skills guides which【C11】______learners to practice these skills【C12】______. In all cases it is important to【C13】______the problem and grasp these skills【C14】______actually starting your studies.

It is important to【C15】______that most students have difficulty in acquiring the language skills【C16】______in college study. One way of【C17】______these difficulties is to attend the language and study-skills classes which most institutions provide throughout the【C18】______year. Another basic【C19】______is to find a study partner【C20】______it is possible to identify difficulties, exchange ideas and provide support.

【C1】

A．extending

B．illustrating

C．performing

D．conducting