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 prepaid. 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 raid 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.
1.Which of the following statements is NOT true?
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A．Food when poisoned can make people sick. |
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B．Food poisoning means death. |
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C．Food poisoning comes in varieties. |
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D．Food poisoning can be serious. |
2. We know from the passage that the symptoms of food poisoning .
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A．are always accompanied by a fever |
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B．are too common to be noted |
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C．can be noticed within hours |
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D．can be ignored |
3.Food poisoning can be caused by all the following EXCEPT .
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A．some chemicals |
B．low temperatures |
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C．some tiny living things |
D．certain natural materials |
4.It can be inferred from the passage that
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A．natural materials are safe in food processing |
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B．chemicals are needed in food processing |
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C．food poisoning can be kept under control |
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D．food poisoning is out of control |
完型填空（共20小题；每小题1．5分，满分30分）
阅读下面短文，掌握其大意，然后从各题所给的四个选项（A、B、C和D）中，选出最佳选项。
A friend in need
Brownie and Spotty were neighbor dogs who met every day to play together. Like pairs of dogs you 36 find in any neighborhood, these two 37 each other and played together so often that they had worn a path through the grass of the field between their own houses.
One evening, Brownie's family 38 that Brownie hadn't returned home. They went looking for him with no 39 Brownie didn't appear the next day, and despite(尽管)their 40 to find him, by the next week he was still missing. Curiously, Spotty 41 at Brownie's house alone, barking. Busy with their own lives, Brownie's family just ignored the 42 little neighbor dog. Finally, one morning Spotty 43 to take “no” for an answer any longer. He followed Ted about, barking strongly, then running towards a nearby wood, as if to say," 44 me! It’s urgent!”
Then Ted followed the anxious Spotty. The little dog led the man to a 45 spot a half mile from the house. There Ted found his beloved Brownie 46 but one of his hind legs stuck in a steel leg-hold trap. Horrified, Ted now wished he'd taken Spotty's earlier requirement 47 Then Ted noticed something quite remarkable. Spotty had done more than simply 48 Brownie's owner to his trapped friend. In a circle around the 49 dog, Ted found some dog food, which was later 50 as the remains of every meal Spotty had been fed that 51 !Spotty had been visiting Brownie 52 in a single-minded quest to keep his friend alive by offering his own comfort. Spotty had obviously 53 with Brownie to protect him from being hurt, snuggling(依偎)with him at night to keep him warm and touching him gently with its nose to keep his 54 up. Brownie's leg was treated by a veterinarian and he recovered. For many years afterward, the two 55 watched the faithful friends frolicking(嬉戏)and chasing each other down that well worn path between their houses.
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14.A. injured B. defeated C. frightened D, worried
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Coral(珊瑚) is not a plant but a variety of animal life ________ and bright colors.
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A．in different shapes |
B．in a different shape |
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C．of different shapes |
D．of a different shape |
If you don’t go to that school, _________.
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A．neither shall I |
B．nor do I |
C．so do I |
D．neither do I |
One island and two lakes _______________ the country.
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A．make up |
B．makes up of |
C．is made up of |
D．consists of |
Soon we lost sight of that famous astronomer _________ himself LiQiang.
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A．called |
B．calling |
C．to call |
D．call |
