题目内容
（请给出正确答案）
A.incline
B.decline
C.increase
D.inflict
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更多“Treating animals kindly does not mean that we must never ________ any pain on them.”相关的问题
humane means treating people or animals in a way that is not cruel.()
The lipstick marks on the animals' heads show that people
A．are cruel with animals.
B．treating the animals better than their children~
C．are treating the animals too well.
D．are making up the animals.
The lipstick marks on the animals' heads show that people ______.
A．are cruel with their animals
B．spend more money on animals than on their children
C．are treating their animals too well
D．are making up their animals
Researchers have discovered that lithium
A．can be used to tame animals that are violent
B．is effective in treating people with sudden aggressive behavior
C．can decrease aggressive behavior
D．can free people from different patterns of aggressive behavior
The significance of the finding is that ______.
A．people now know the number of chimpanzees is much smaller than expected
B．it may make it possible for scientists to discover new ways of treating AIDS
C．it proves some deadly human diseases can also be transmitted to wild animals
D．it Will soon help the scientists develop a vaccine that prevents the AIDS virus
Dogs are social animals and without proper training,
they will behave as wild animals. They will soil your houses, 【M1】______
destroy your belongings, bark excessively, fight other dogs
and even if bite you. Nearly all behavior. problems are 【M2】______
perfectly normal dog activities that occur at the wrong time or
place or are directed at the wrong thing. The key to prevent 【M3】______
or treating behavior. problems is learning to teach the dog to
redirect its normal behavior. to outlets that are acceptable in
the domestic setting.
One of the best thing you can do for your dog and 【M4】______
yourself is to obedience train (驯服) it. Obedience training
doesn't solve all behavior. problems, but it is the foundation
for solving just about any problem. Training opens up a line
of communication between you and your dog. Effective
communication is necessary to instruct your dog about that 【M5】______
you want it to do.
Training is also an easy way to establish the social rank
order. When your dog obey a simple request of "come here, 【M6】______
sit", it is showing obedience and respect for you. It is not
unnecessary to establish yourself as top dog or leader of the 【M7】______
dog pack (群) by using extreme measures. You can teach your
dog its subordinate role by teaching it to show submission to
you. Most dogs love performing tricks for you pleasantly 【M8】______
accept that you are in charge.
Training should be fun and rewarding for you and your dog.
It can enrich your relationship and let living together enjoyable. A 【M9】______
well-training dog is more confident and can more safely be 【M10】______
allowed a greater amount of freedom than an untrained animal.
【M1】
Regeneration of Limbs
Most people would agree that it would be wonderful if humans could regenerate limbs. These who have lost their arms or legs would be complete again. The day is still far off when this might happen. But in the last 10 years, doctors have reported regeneration in smaller parts of the body, most often fingers.
Regeneration is not a newly-discovered process. For centuries, scientists have seen it work in some kinds of animals. Break off a lizard's (蜥蜴的) tail, for example, and it will grow a new tail. Scientists now are looking for a way to turn on this exciting ability in more highly-developed animals, including humans. Their experiments show that nerves, cell chemistry and the natural electric currents in the body all seem to have a part in this process.
The body of every animal contains general purpose cells that change into whatever kind of cells the body needs. Animals such as the lizard or salamander (蝾螈) use these cells to regenerate a new tail or leg when the old one is broken off. These cells collect around the wound. They form. a mass called a blastama (胚基). The cells of the blastema begin to change. Some become bone cells, some muscle cells, some skin cells. Slowly, a new part regrows from the body outward. When completed, the new part is just like the old one.
Mote than 200 years ago, Italian scientist Luigi Spallanzani showed that younger animals have a greater ability to regenerate lost parts than older animals. So do animals lower on the ladder of evolutionary development. The major difference seems to be that less-developed animals have more nerves in their tails and legs than humans do in their arms and legs.
Another helpful piece of information was discovered in the late 1600s. Scientists found that when a creature is injured, an electrical current flows around the wound. The strength of the current depends on how severe the wound is and on how much nerve tissue is present.
In 1945, American scientist Meryl Rose tested another idea about regeneration. He thought a new limb might grow only from an open wound. Doctor Rose cut off the front legs of some frogs, below the knee. He kept the wounds wet with a strong salty liquid. This prevented skin from growing over the wounds. The results were surprising. Frogs do not regenerate new legs naturally. But these frogs began to grow new limbs. About half of each cut-off leg grew back again. New bones and muscles developed.
This research has led doctors to new ways of treating cut-off fingers. Doctors have observed, for example, that many children and some adults will regrow the top of a finger if the wound is left open.
The passage indicates that
A．humans can never regenerate limbs.
B．humans might be able to regenerate limbs in the future.
C．human limbs may be regenerated on some animals first.
D．regeneration of human limbs will soon become a reality.
one of the best things you can do for your dog and yourself is to obedience train (驯服) it. Obedience training doesn't solve all behavior. problems, but it is the foundation for solving just about any problem. Training opens up a line of communication between you and your dog. Effective communication is necessary to instruct your dog about what you want it to do.
Training is also an easy way to establish the social rank order. When your dog obeys a simple request of "come here, sit," it is showing obedience and respect for you. It is not necessary to establish yourself as top dog or leader of the dog pack (群) by using extreme measures. You can teach your dog its subordinate (从属的) role by teaching it to show submission to you. Most dogs love performing tricks for you to pleasantly accept that you are in charge.
Training should be fun and rewarding for you and your dog. It can enrich your relationship and make living together more enjoyable. A well-trained dog is more confident and can more safely be allowed a grea- ter amount of freedom than an untrained animal.
Behavior. problems of dogs are believed to ______ .
A．be just part of their nature
B．worsen in modem society
C．occur when they go wild
D．present a threat to the community
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