You ought to have put the milk in the refrigerator,now__________sour.?

A.I smell　　　　 B.it is smelt　　 C.it smells　　　 D.it is smelling ?

　　There are two types of people in the world. Although they have equal degree of health and wealth and other comforts of life, one becomes happy, the other becomes unhappy. This arises from the different ways in which they consider things, persons, events and the resulting effects upon their minds.

　　People who are to be happy fix their attention on the convenience of things. The pleasant parts of conversation, the well prepared dishes, the goodness of the wine, the fine weather. They enjoy all the cheerful things. Those who are to be unhappy think and speak only of the opposite things. Therefore, they are continually dissatisfied. By their remarks, they sour the pleasure of society, offend （hurt）many people, and make themselves disagreeable everywhere. If this turn of mind was founded in nature, such unhappy persons would be the more to be pitied. The intention of criticizing （批评）and being disliked is perhaps taken up by imitation（模仿）. It grows into a habit, unknown to its possessors. The habit may be strong , but it may be cured when those who have it realize its bad effects on their interests and tastes. I hope this little warning may be of service to them, and help them change this habit.

　　Although in fact it is chiefly an act of the imagination, it has serious results in life since it brings on deep sorrow and bad luck. Those people offend many others; nobody loves them, and no one treats them with more than the most common politeness and respect. This frequently puts them in bad temper and draws them into arguments. If they aim at getting some advantages in social position or fortune, nobody wishes them success. Nor will anyone start a step or speak a word to favor their hopes. If they bring on themselves public objections, no one will defend or excuse them, and many will join to criticize their wrongdoings. These should change this bad habit and be pleased with what is pleasing, without worrying needlessly about themselves and others. If they do not, it will be good for others to avoid any contact （接触）with them. Otherwise, it can be disagreeable and sometimes very inconvenient, especially when one becomes mixed up in their quarrels.

　48．“The phrase“sour the pleasure of society” most nearly means________.

　　A. have a good taste with social life    B. make others unhappy

　　C. tend to scold others openly        D. enjoy the pleasure of life

　49．We can conclude from the passage that________.

　　A. we should pity all such unhappy people

　　B. such unhappy people are dangerous to social life

　　C. people can get rid of the habit of unhappiness

　　D. unhappy people can not understand happy persons

　50．If such unhappy persons insist on keeping the habit , the author suggests that people should ________.

　　A. prevent any communication with them

　　B. show no respect and politeness to them

　　C. persuade them to recognize the bad effects

　　D. quarrel with them until they realize the mistakes

　51．In this passage, the writer mainly________.

　　A. describes two types of people         B. laughs at the unhappy people

　　C. suggests ways to help them unhappy    D. tells people how to be happy in life

A car needs gas to run and your body also needs food to work for you. Eating the right kind of food is very important. It can help your body grow strong to take care of what you eat.

There are four main food groups altogether. The dairy group has food like milk, cheese and sour milk. The other three groups are the meat and fish group, the fruit and vegetable group, and the bread and rice group. Each meal should have at least one food from all four main groups. With all these food together, you will be given enough energy（能量）during the day.

　 It is easy to get into bad eating habits. You may eat your breakfast in a hurry to get to school on time. Or you may not have time for a good lunch. It may seem easy to finish your supper with fish and chips all the time. But you will find your self tired in these days and you can not think quickly.

　 Watching what you eat will help keep your body healthy and strong. It is also good to take some exercise. It will help you eat more if you take a walk or play games in the open air. Having a good eating habit with some exercise is the key to your health.

77. Which of the following diets do you think is the best one?

A. Eggs, tomatoes and chicken.

B. Milk, bread, cabbages and beef.

C. Corn, fish, cream and pork.

D. Rice, beancurd, apples, fish and chicken.

78. Which of the following is a good eating-habit?

A. Going to school without any breakfast.

B. Eating fish and chips for supper all the time.

C. Finishing your lunch in a very short time.

D. Having at least one food from all four groups each meal.

79. In this passage the writer mainly tells us that　　　

A. every person needs food to grow well

B. taking exercise can keep your body strong

C. right kind of food with exercise will keep you healthy

D. enough energy helps people think more quickly

80. The underlined word "dairy" in the second passage means　　　

　 A. the shop that sells milk and butter　

　 B. the food made out of cows such as milk and butter

　 C. a farm where cows are kept

　 D. a place where milk products are made

Mouth bacteria grow fast in airless conditions. Oxygen rich saliva(唾液) keeps their numbers down. When we sleep, for example, the saliva stream slows, and sulfur(硫) producing bacteria gains the upper hand, producing classic “morning breath”.

　　Alcohol drinking, too much talking, breathing through the mouth during exercise, anything that dries the mouth produces bad breath. So can stress, though it’s not understood why. Some people’s breath turns sour every time they go on a job interview.

　 Saliva flow gradually slows with age, which explains why the elderly have more bad breath trouble than younger people do. Babies, however, who make plenty of saliva and whose mouths contain relatively few bacteria have characteristically sweet breath.

　 For most of us, the simple, dry mouth variety of bad breath is easily cured. Eating or drinking starts saliva and sweeps away many of the bacteria. Breakfast often stops morning breath.

　 Those with constant dry mouth find that it helps to keep gum, hard candy, or a bottle of water or juice around. Brushing the teeth wipes out dry mouth bad breath because it clears away many of the offending bacteria.

Surprisingly, one thing that rarely works is mouthwash. The liquid can mask bad breath smell with its own smell, but the effect lasts no more than an hour. Some mouthwashes claim to kill the bacteria responsible for bad breath. The trouble is, they don’t necessarily reach all offending germs. Most bacteria are well protected from mouthwash under thick layers of mucus (粘液). If the mouthwash contains alcohol—as most do—it can worsen the problem by drying out the mouth.

72. Which of the following is mentioned as one of the causes of bad breath?

A. Tooth trouble.　　 　B. Sulfur rich food.　　

C. Too much exercise.　　　　　 D. Mental pressure.

73. According to the passage, alcohol has something to do with bad breath mainly because ____.

A. it keeps offending bacteria from reproducing　　 B. its smell adds to bad breath

C. it kills some helpful bacteria　　　　　　　　　 D. it affects the normal flow of saliva

74. Mouthwashes are not an effective cure for bad breath mainly because ________.

A. they can’t mask the bad odor long enough

B. they can’t get to all the offending bacteria

C. their strong smell mixes with bad breath and makes it worse

D. they can’t cover the thick layers of mucus

75. We can infer from this passage that ________.

A. offensive breath can’t easily be cured　　　

B. elderly people are less offended by bad breath

C. heavy drinkers are less affected by bad breath　

D. offensive breath is less affected by alcohol