题目内容
（请给出正确答案）
Some warm-blooded animals ______ hibernate.
A. need not
B. does not need
C. not need
D. do not need
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Passage Two
Questions 26 to 30 are based on the following passage.
Certain animals and plants develop characteristics(特性)that help them cope with their environment better than others of their kind. This natural biological process is called adaptation(适应性). Among the superior characteristics developed through adaptation are those that may help in getting food or shelter，in providing protection，and in producing and protecting the young. That results in the evolution of more and more organisms that are better fitted to their environments.
Each living thing is adapted to its way of life in a general way，but each is adapted especially to its own distinct class. A plant，for example，depends upon its roots to fix itself firmly and to absorb water and inorganic chemicals. It depends upon its green leaves for using the sun's energy to make food from inorganic chemicals. These are general adaptations，common to most plants. In addition，there are special adaptations that only certain kinds of plants have. Many animals have adaptations that help them escape from their enemies. Some insects are hidden by their body color or shape，and many look like a leaf or a little branch. The coats of deer are colored to mix with the surroundings. Many animals have the ability to remain completely still when an enemy is near.
Organisms have a great variety of ways for adapting. They may adapt in their structure，function，and genetics(遗传素质)；in their development and production of the young；and in other respects. An organism may create its own environment，as do warm-blooded mammals. which have the ability to adjust body heat exactly to maintain their ideal temperature despite changing weather. Usually adaptations are an advantage，but sometimes an organism is so well adapted to a particular environment that，if conditions Change，it finds it difficult or impossible to readapt to the new conditions.
Some plants and animals develop superior characteristics so that they may______.
A. help others of their kind get food，shelter and other things needed
B. get into the biological process of adaptation
C. become better adapted to the environments than others of their kind
D. lead to the evolution and production of more and more organisms
A. They can change their environments.
B. They can adjust body heat to keep their ideal temperature.
C. They can make food from chemicals.
D. They get most of their heat from the environment.
听力原文： All warm-blooded animals are very helpless at first. Young birds and young bats must be taught to fly. Thousands of young seals drown every year. They never learn to swim "naturally." The mother has to take them out under her flipper and show them how. Birds sing without instruction; however, they do not sing well unless they are able to hear older members of their species. Older harvest mice build better nests than beginners. Frank Buck says that the young elephant does not seem to know at first what his trunk is for. It gets in his way and seems more of a hindrance than a help until his parents show him what to do with it. Insects, seem to start life equipped with all necessary reflexes, but they seem to improve their talents with practice. Young spiders, for example, begin by making quite primitive little webs. They attain perfection in their art only after much time. Older spiders, if deprived of their spinnerets, will take to hunting.
(33)
A．They know what to do because of instinct.
B．They know how to fly naturally.
C．They often reject their parents.
D．They learn behavior. from their parents or other animals.
The agent was going to ______.
A．give Lane some important papers
B．tell him some pieces of advice
C．tell him some important news
D．tell him his suffering
A.some important economic concepts
B.some important economical concepts
C.some important concepts of economics
D.some important concepts of economy
A.ny;some
B.ny;any
C.some;any
D.some;some
