It is possible to do many simple tricks with numbers. Here is one trick. It has seven steps.
First, write down your house number. For example, if your address is 73 Lemon Street, you would write down 73.
Next, double it. In other words, multiply(乘) it by two. Then, add five to this doubled number. For example, if your address was 73 and you doubled it, you would get 146. Then, if you added five, you’d get 151.
So, to repeat the first three steps, write down your house number, double it, and add five.
Fourth, multiply this number by 50. In our example here, if you multiply 151 by 50, you’ll get 7550.
The fifth step is to add your age to this total. For example, if you’re 26 years old, you should add 26 to this total. In our example here, the result would be 7550 plus 26, you’ll get 7576.
Sixth, you have to add the number of days in a year, which is 365. In our example here, 365 added to 7576 is 7941.  
The seventh and final step is this: subtract(减) 615 from the number that you have. In our example, 7941 minus 615 is 7326.
The result here, 7-3-2-6, is the trick. The first part of the number is the address and the last part of the number is the age of the person. That is, 73 is the address that we started with, and 26 is the age that we used.
If you follow these seven steps with any address and the age of any person. You will get the same result.
73 According to the trick, what number can you get if you are 16 years old and your house number is 85？
A. 1685          B. 8516          C. 8165          D. 1658
74. How can your age number appear at the last part of the result?
A. It’s really a trick.
B. By taking all the steps except Step1 and Step 2.
C. By taking Step 6 and Step 7.
D. By taking all the steps.
75. What’s the secret of the trick?
A. It’s impossible to know.
B. By taking Step 2 and Step 4, we get the formula(公式)：your address number ×2×50.
C. By taking all the steps except 1 and 2, we get the formula: 5×50+your age number+365－615="your" age number.
D. Both B and C.

C
Classified ads
For direct classified service, call 800-0667 10 a.m.-4 p.m., Monday—Friday.
For rent
Excellent room for girls, begins Jan., 2,4,or 8 months lease(租期). Single,$105-125.Double,$140. Call 800-1932.
Family home, 3 bedrooms, large yard.$275. Call 800-4300
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For sale
Sheepskin coat, men’s size 42, 1 year old. $85. After 6 p.m.Call 800-5224.
Color TV21,$150；transistor radio, $15；recorder,$25. Call 800-0739.
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Help wanted
Babysitter — My home
If you could find a few hours during the day, some evenings and weekends to care for 2 school-age children, please call 800-1111.
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Lost
A black bag with a pencil-box and some books left in the reading room. Will the finder please come to Class 3,Grade 1?
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Found
A green Jacket was left on the sports ground yesterday afternoon(April 15th).Will the owner please ring 656-6688?
59.“Classified ads”may probably mean____________.
A.ads about everyone’s life
B.ads giving one some necessary information
C.ads divided into different groups according to a certain rule
D.ads for which you needn’t pay any money
60.If you want to place an ad. What number should you call?
A.800-0739.                 B.800-1932.                 C.800-4300.                 D.800-0667.
61.If you want to get a used color TV and a recorder, how much will you have to pay?
A.＄275.                      B. ＄150.                    C. ＄25.                     D.＄175.
62.If you want to find a part-time job,you will look at                .
A.For rent                   B.For sale                     C.Help wanted                     D.Lost
63.If you can’t find your school card,you will put up a notice at_________.
A.Lost                          B.Found                       C.Help wanted                     D.For sale

Classified Ads（广告）
For direct classified service, call 800-0667 10 a.m.—4 p.m., Monday---Friday.
For Rent
Best on Campus
Excellent Room for girls, begins Jan., 2, 4, or 8 months lease. Single, $ 105. $125. Double, $ 140. Call
800-1932.
Family Home, 3 bedrooms, large yard. $ 275. Call 800-4300.
For Sale
Sheepskin Coat, men’s size 42, 1year old. $ 85. After 6 p.m. call 800-5224.
Moving: Must sell. Color TV 21, $ 150; transistor radio, $ 15; recorder, $ 25. Call 800-0739.
Help Wanted
Babysitter—My home
If you could find a few hours during the day, some evenings and weekends to care for 2 school- age children,
please call 800-1111.
Lost
A black bag with a pencil-box and some books left in the reading room. Will the finder please come to Class 3, Grade 1?
Found
A green jacket was left on the sports ground yesterday afternoon ( April 15th). Will the owner please ring
656-6688?
【小题1】If you wanted to place an ad. , what number would you call?

Uncertainty spreads through our lives so thoroughly that it dominates our language. Our everyday speech is made up in large part of words like probably, many, soon, great, little. What do these words mean?Such verbal expression is not necessarily to be criticized. Indeed, it has a value just because it allows us to express judgments when a precise quantitative statement is out of the question.
We have been trying to pin down by experiments what people mean by these expressions in specific contexts, and how the meanings change with age. For instance, a subject is told “There are many trees in the park” and is asked to say what number the word many mean to him. Or a child is invited to take “some” sweets from a bowl and we then count how many he has taken. We compare the number he takes when he is alone with the number when one or more other children are present and are to take some sweets after him, or with the number he takes when told to give “some” sweets to another child.
First, we find that the number depends, of course, on the items involved. To most people some friends means about five, while some trees means about twenty. However, unrelated areas sometimes show parallel values. For instance, the language of probability seems to mean about the same thing in predictions about the weather and about politics: the expression “is certain to” (rain, or be elected) signifies to the average person about a 70 percent chance; “is likely to”, about a 60 percent chance; “probably will” about 55 percent.
Secondly, the size of the population of items influences the value assigned to an expression. Thus, if we tell a subject to take “a few” or “ a lot of” glass balls from a box, he will take more if the box contains a large number of glass balls than if it has a small number. But not proportionately more: if we increase the number of glass balls eight times, the subject takes only half as large a percentage of the total.
Thirdly, there is a marked change with age. Among children between six and fourteen years old, the older the child, the fewer glass balls he will take. But the difference between a lot and a few widens with age. This age effect is so consistent that it might be used as a test of intelligence.
【小题1】 What’s the right attitude towards the words like probably, many, soon?

Below are some classified ads from the Internet