题目内容

Many students find the experience of attending university lectures to be a confusing and frustrating 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

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The tone of the passage can best be described as ______.

A. analytical and optimistic
B. biased and unprofessional
C. critical and discouraged
D. tentative and inconclusive

A.It's Columbus' pure luck.B.It proves that the earth is not round.C.It enriched the A

A. It's Columbus' pure luck.
B. It proves that the earth is not round.
C. It enriched the American people.
D. It's one of the biggest lucky mistakes.

The use of the word "ominous" shows that the author believes the child's ______.

A. linguistic future is threatened
B. nerves will deteriorate
C. hearing will suffer
D. mathematical ability will decline

A typical clay soil is composed of approximately 60 percent actual clay, 20 percent silt, and 20 percent sand. The particles in a sandy soil are so fine that it tends to be compact and interferes with the oxygen supply for plant roots. Water has trouble entering this impervious soil, and runoff is very common during rainfalls.
A typical light sandy soil is composed of approximately 70 percent sand, 20 percent silt, and 10 percent clay. The particles in a sandy soil are comparatively large, permitting water to enter the soil and to pass through it so quickly that it often carries nutrients with it and dries out very rapidly. The texture of sandy soils is generally very difficult to modify because huge amounts of organic material must be added.
A typical loam soil is composed of approximately 40 percent sand, 40 percent silt, and 20 percent clay, making it an ideal garden soil. It is easily worked and retains water and nutrients, which are slowly absorbed by plant roots.
A typical adobe soil is a clay soil present in hot, dry areas of the country and is often very hard and cracked. It has all the disadvantages of a heavy clay soil and, being much drier, is more difficult to correct.
What is the author's main purpose in this passage?

A. To tell gardeners how to modify their soil.
B. To classify soil types on the basis of their composition.
C. To illustrate the effects of soil type on plant growth.
D. To show how water is absorbed by different soil.

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