Angels

My friend Heather mentioned that she had never seen an Angel. Then I remembered the 36  I had with my sister Sandra earlier this week.

This will be Sandra’s first Christmas without her husband. This summer he died in her arms. On Thursday, she was in the store 　37　 for an ideal card for her two sons and daughter. Time passed by quickly as she 　38  the many choices. She wanted a card that sent something special to each of them, 　39  she knew they would have a(n) 　40  place in their heart this holiday season.

Finally! She found the one that expressed the 　41 feeling. The words expressed the feelings that she wished to share. However, a sharp pain pierced(穿透) her heart when she realized that the card was 　42 “mom and dad.” She stood there, 　43  it close for a long time, unable to move from the 　44  . Tears began to run down her cheeks.

“Is there something I can do for you?” a 　45  voice asked. She 　46  to face a stranger, a woman, who was looking at her with 　47  and concern. “Uh…oh...OH!” Sandra responded, “I can’t give this card to my children because…because my husband died and this is the 　48  card.”

Hearing this, the stranger’s face softened with sympathy(同情) and love. She reached out and　49  my sister into her arms, giving her unspoken permission to cry in the protection of her embrace(拥抱). She 　50  held my sister until her calmness　51  . “Thank you for listening to me cry on,” was what my sister said when all was better. “You are welcome, and I am so sorry for your 　52 ,” the stranger answered and said goodbye to her.

During her telling of this event I was feeling 　53  that I hadn’t been there. My sister needed me and a stranger had to do my 　54  .  “You know,” she went on, “a friend suggested that it was like meeting with an Angel.” My 　55  disappeared in an instant. My sister required an Angel, and I think that is exactly what she got.

The word “conservation” has a thrifty meaning. To conserve is to save and protect, to leave what we ourselves enjoy in such a good condition that others may also share the enjoyment. Our forefathers had no idea that human population would increase faster than the supplies of raw materials: most of them, even until very recently, had the foolish idea that the treasures were “limitless” and could “last forever”. Most of the citizens of earlier generations knew little or nothing about the complicated and delicate system that runs all through nature, and which means that, as in a living body, an unhealthy condition of one part will sooner or later be harmful to all the others.

　　Fifty years ago, nature study was not part of the school work; scientific forestry was a new idea; wood was still cheap because it could be brought in any quantity from distant woodlands; soil destruction and river floods were not national problems; nobody had yet studied long-term climatic cycles in relation to proper land use; even the word “conservation” had nothing of the meaning that it has for us today.

　　For the sake of ourselves and those who will come after us, we must now set about correcting the mistakes of our forefathers. Conservation should be made part of everybody’s daily life. To know about the water table in ground is just as important to us as a knowledge of the basic math formulas. We need to know why all watersheds (上游集水区) need the protection of plant life and why the running current of streams and rivers must be made to give their full benefit to the soil before they finally escape to the sea. We need to be taught the duty of planting trees as well as of cutting them. We need to know the importance of big, grown trees, because living space for most of man’s fellow creatures on this planet is figured not only in square measure of surface but also in cubic (立方体的) volume above the earth. In a word, it should be our goal to restore as much of the original beauty of nature as we can.

1.The author’s attitude towards the use of natural resources is _________.

    A. positive         B. uninterested     C. optimistic           D. critical

2.According to the author, the greatest mistake of our forefathers was that _________.

　　A. they had no idea about scientific forestry

　　B. they had little or no sense of environmental protection

　　C. they were not aware of the importance of nature study

　　D. they had no idea of how to make good use of raw materials

3.To avoid repeating the mistakes of our forefathers, the author suggests that _________.

　　A. we plant more trees

　　B. natural sciences be taught to everybody

　　C. environmental education be directed toward everyone

　　D. we return to nature

4.How can you understand the underlined sentence in the last paragraph?

A. Our living space on the earth is getting smaller and smaller.

B. Our living space should be measured in cubic volume.

C. We need to take some measures to protect space.

D. We must preserve good living conditions for both birds and animals.

Food sometimes gets poisoned with harmful things. A person who eats such food can get an illness called food poisoning. Food poisoning is usually not serious, but some types are deadly. The symptoms of food poisoning usually begin within hours of eating the poisoned food. Fever is one of the most common symptoms.
Certain microorganisms(微生物)cause most types of food poisoning. Bacteria and other microorganisms can poison eggs, meat, vegetables, and many other foods. After entering the body, these tiny living things release(释放)poisons that make people sick.
Some chemicals can also cause food poisoning. They are often added to food while it is being grown, processed, or prepared. For example, many farmers spray chemicals on crops to kill weeds and insects. Some people may have a bad reaction to those chemicals when they eat the crops.
Some plants and animals contain natural poisons that are harmful to people. These include certain kinds of seafood, grains, nuts, seeds, beans, and mushrooms.
When people handle food properly, the risk of food poisoning is very small. Microorganisms multiply rapidly in dirty places and in warm temperatures. This means that people should never touch food with dirty hands or put food on unwashed surfaces. Food should be kept in a refrigerator to stop microorganisms from growing. Meat needs to be cooked thoroughly to kill any dangerous microorganisms. People should also wash food covered with chemicals before eating it. Finally, people should not eat wild mushrooms or other foods that grow in the wild. Some of these foods may contain natural materials that are poisonous to humans. In addition, some types of fish can be poisonous.
Most people recover from food poisoning after a few days of resting and drinking extra water. If people eat natural poisons, they must go to the hospital right away to have their stomachs emptied.
67. Which of the following statements is NOT true?
A. Food when poisoned can make people sick.   
B. Food poisoning means death.
C. Food poisoning comes in varieties.           
D. Food poisoning can be serious.
68. Food poisoning can be caused by all the following EXCEPT ________.
A. some chemicals            B. low temperatures
C. some tiny living things      D. certain natural materials
69. From Paragraph 5,we can learn that ______________.
A. mushrooms should not be eaten      
B. vegetables are safer than meat and seafood
　　C. natural poisons are more dangerous than chemicals
　　D. different types of food should be handled differently
70. It can be inferred from the passage that____________ .
　　A. natural materials are safe in food processing
　　B. chemicals are needed in food processing
　　C. food poisoning can be kept under control
　　D. food poisoning is out of control

B
　　Fever has usually been regarded as a threat to health.However,no one has actually proved that fever is dangerous.This fact attracted the attention of Matthew J.Kluger.Imagining that fever might not be as harmful as it had been supposed,Kluger set up a series of experiments with lizards(蜥蜴).
　　What Kluger and his team did his team did in their first experiment was simple.They put some lizards in a sand-box,one end of which was heated to 44℃,while the other was at a room temperature.It was found that the lizards moved form one part of the box to the other in order to keep a constant temperature of about 38℃.Having shown that normal lizards regulate(调节) their own temperature,Kuger,in a second experiment,then set out to show that lizards,like most other animals,develop fever when infected.This was done by making lizards infected with bacteria (细菌) that were known to cause disease.As the team expected,the infected lizards remained longer in the heated part of the box,until they had raised their body temperatures to two or three degrees above normal.In other words,the sick lizards gave themselves fever.
　　In a third experiment,the team observed the effect of temperature on the survival of the lizards.One group of infected lizards was given a fever - suppressing(退烧) drug.The other group was given no drug and ran a fever,that is to say,they kept a highter temperature for four or five days before seeking a cooler environment.The results were impressive.Of those which raised their body temperature,all but one remained alive.Of those given the fever - suppressing drug,more than half died.Similar results have since been produced in other animals.For example,infeced fish swim to warmer water,and will die if not allowed to do so.
　　An important conclusion can be drawn from these experiments.As Kluger points out,lizards have been on earth for hundreds of millions of years.It is reasonable to suppose that a response that is so old has been kept by nature for some purpose.It would appear, therefore, that fever does not make disease worse.Rather it its part of the mechanism(机能) by which infection is controlled.
　　60.In his experiments,Kluger was hoping to prove that fever ________.
　　　A.is not harmful to lizards
　　　B.is not necessarily bad
　　　C.is necessary for both humans and animals
　　　D.has the same effect on humans and animals
　　61.The lizards put in the sand - box in the first experiment _____.
　　　A.had a fever B.were not sick C.recovered from disease D.died of heat
　　62.In the third experiment,the lizards given a fever - suppressing drug died because _____.
　　　A.they had no more fever that they needed
　　　B.they were normal ones and had no fever
　　　C.the drug had no iffect on sick lizards
　　　D.the drug made their body temperature too low
　　63.How would you understand the underlined words"a response" in the last paragraph?
　　　A.Gause of disease. B.Recovery from disease.
　　　C.Relationship between living D.Natural defense in the body against disease.