题目内容
He has found ________ to understand.
- A.they really hard
- B.them really hard
- C.they real hard
- D.they were really hard
题干需用宾语加宾补结构;D项时态不合适。
The German shepherd runs off and noses around in the grass of Kenya’s Laikipia Plateau. “OK, Oakley,” the dog’s handler orders, “Find it!”
Oakley sniffs (嗅) until he comes to a bush, then stops, sits, and looks up at his handler. She bends to see what he has found: the waste of an endangered African wild dog. “Good dog!” she praises. The handler pulls a tennis ball from her pocket. Oakley jumps for his reward.
“He doesn’t actually want the waste,” says Aimee Hurt, a founding member of the U.S.-based group Working Dogs for Conservation. Hurt is in Kenya to train both Oakley and his handler. “He finds it so he can play with his ball. We’re the ones who want the waste.”
Detection dogs are sometimes taught to locate actual animals. Black-footed ferrets (雪貂) have been studied with their help. But more often the dogs learn to locate the waste of creatures such as bears, wolves and mountain lions.
What the dogs find provides scientists with data about a species. Scientists can use the DNA collected from animal waste to identify individuals, sex, and population sizes — all without ever seeing the animal itself. “It can take years to gather this kind of information if you have to trap animals,” Hurt explains.
Waste analysis might make a huge difference when wild species are accused of attacking domestic livestock (家畜). Hurt says, “A good detection dog will find the waste so we can see what the animal is actually eating.” This may help reduce problems between people and wildlife.
【小题1】 The underlined word “She” in Paragraph 2 refers to “_____”.
| A.the German shepherd |
| B.an African wild dog |
| C.Aimee Hurt |
| D.the handler |
| A.he wants to study endangered animals |
| B.he can get a tennis ball to play with |
| C.he wants to eat it |
| D.he wants to play with it |
| A.Trapping animals is not difficult. |
| B.People are making efforts to protect the environment. |
| C.Detection dogs attack domestic livestock frequently. |
| D.Collecting animal waste is a good way to gather information. |
| A.Detection dogs can help scientists study wildlife. |
| B.Detection dogs can defend wildlife. |
| C.Detection dogs can help the police catch the criminals. |
| D.Detection dogs can help local people defend domestic livestock. |
We can stay young forever. That is the message Dr. Shen Ziyin wants to give the world. And the Chinese doctor claims that he has found an answer to the problems of aging.
His solution is a herbal medicine to slow the process of aging.
Dr. Shen Ziyin has been trained in Western medicine. At the same time he studied traditional Chinese medicine. And, he has been working for the past forty years to put together the best of both and find a cure for aging. He has taken a hint from the ancient Chinese medicine system called “shen”.
According to Shen, it is the kidney(肾脏)which adjusts the functioning of the body as well as its aging process. It is responsible for the level of activity that the human bodies go through. Studies conducted by Dr. Shen show that herbal medicine based on the shen system slow the aging process, says a report in The Telegraph newspaper.
We notice that when people grow old, they have reduced strength, loss of hair, backache, weakness in general, and wrinkles, among others. This happens because when people grow old, their bodies produce T-cells. These T-cells contain a particular substance called Fas. Fas makes the cells in the body destruct themselves.
So the only way to slow down aging is to slow the production of T-cells in the body. This can happen if people eat low calorie food. Then the body is not active enough to produce extra T-cells. But, is going hungry all the time a good price to pay for staying young?
This is where Dr. Shen’s herbal medicine comes in. But how effective it will be, only time can tell.
1.How did Dr. Shen find the solution to the problem of aging?
|
A.By studying Western medicine. |
|
B.By learning traditional Chinese medicine. |
|
C.By combining both Western and Chinese medicine. |
|
D.By doing research on both Western and Chinese people. |
2.What plays the most important role in keeping people young according to Shen?
|
A.Medical treatment. |
B.People’s good kidney. |
|
C.Level of people’s activity. |
D.Positive life attitude. |
3.The reason why people become old is that _________.
|
A.their bodies produce T-cells |
|
B.their bodies are unable to fight diseases |
|
C.they have reduced strength, loss of hair |
|
D.they become weaker and weaker |
4.We can probably learn from the passage that _________.
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A.producing more low calorie food allows people to keep young |
|
B.the more Chinese herbal medicine people drink, the better for health |
|
C.people should try to quicken the production of T-cells in the body |
|
D.it remains unknown how effective Dr. Shen’s herbal medicine is |