[填空题]Unlike most plants, animals are living beings that have the ability to move{{U}} (11) {{/U}}in search of food. Scientists divide animals into two groups. The animals in the first group are those with backbones{{U}} (12) {{/U}}the second group includes those without{{U}} (13) {{/U}}. Birds, fish and mammals belong to the first group. Among them, animals are{{U}} (14) {{/U}}the most complex animals. Mammals have{{U}} (15) {{/U}}or fur. They nurse their young.{{U}} (16) {{/U}}people use the word "animal" when they are talking about mammals such as the dog, cat, cow, horse, rabbit or{{U}} (17) {{/U}}. Most animals of the second group{{U}} (18) {{/U}}in water because the pull of gravity makes it difficult for them to{{U}} (19) {{/U}}about on land. The largest animal on earth is the blue whale. A whale often grows more than 30 meters{{U}} (20) {{/U}}and weighs more than 100 tons. The elephant is the largest land animal and the ostrich is the largest bird.

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[单项选择]Do you have any （）about what living beings on other planets would be like
A. ideal
B. comprehension
C. notion
D. intelligence

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[单项选择]Text 2

Most human beings actually decide before they think. When any human being executive, specialized expert, or person in the street—encounters a complex issue and forms an opinion, often within a matter of seconds, how thoroughly has he or she explored the implications of the various courses of action Answer: not very thoroughly. Very few people, no matter how intelligent or experienced, can take inventory of the many branching possibilities, possible outcomes, side effects, and undesired consequences of a policy or a course of action in a matter of seconds. Yet, those who pride themselves on being decisive often try to do just that. And once their brains lock onto an opinion, most of their thinking thereafter consists of finding support for it.
A very serious side effect of argumentative decision making can be a lack of support for th
A. executive, specialized expert, are no more clever than person in the street
B. very few people decide before they think
C. those who pride themselves on being decisive often fail to do so
D. people tend to consider carefully before making decisions

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[单项选择]They have been living under the most appalling conditions for two years.
A. dreadful
B. bad
C. unpleasant
D. poor

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[简答题]All we really know is that men, unlike animals, somehow invented certain sounds to express thoughts and feelings, actions and things, so that they could communicate with each other; and that later they agreed upon certain signs, called letters, which could be combined to represent those sounds, and which could be written down.

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Most growing plants contain much more water than all other materials combined. C. R. Barnes has suggested that it is as proper to term the plant a water structure as to call a house composed mainly of brick a brick building. Certain it is that all essential processes of plant growth and development occur in water. The mineral elements from the soil that are usable by the plant must be dissolved in the soil solution before they can be taken into the root. They are carried to all parts of the growing plant and are built into essential plant materials while in a dissolved state. The carbon dioxide from the air may enter the leaf as a gas but is dissolved in water in the leaf before it is combined with a part of the water to form simple sugars—the base material from which the plant body is mainly built. Actively growing plant parts are generally 75 to 90 perce
A. (A) The mineral elements will not be absorbed by the plant unless they are dissolved in its root.
B. (B) The woody stems contain more water than the leaves.
C. (C) Air existing around the leaf is found to be saturated.
D. (D) Only part of the carbon dioxide in the plants is synthesized.

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