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【简答题】
Substances which are made up of only one kind of atom are called S36 ______ and there are about a hundred of these -- the same S37 ______as there are kinds of atom. These are the substances from which everything else is made. Aristotle taught that there were four elements -- earth, air, fire, and water -- but he was very wrong. None of these is an element in any sense of the word and S38 ______ There is nothing obvious about the appearance of an element which makes it different from other substances, and this explains why man take so long to discover the building blocks from which his world is made, 0nly patient and S39 ______ were able to show that sulfur, copper, and diamond were elements, but air, water, and sand were not. S40 ______ but have to be prepared in the laboratory. For example, the two elements of which water is made are the gases oxygen and hydrogen; oxygen occurs in the air, but it is mixed with a large amount of other gases, and hydrogen is not even present in the air. S36
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【单选题】Mr. Mohammed AI-Rashid 45 Jake’s Court Croydon, Surrey United Kingdom CR9 9EL March 9 Dear Mr. AI-Rashid, In order to show our (150) for your long association with the Club, we’d like to offer you a...
A.
apart
B.
back
C.
out
D.
up
【单选题】Dipple Hardware For over ten years, Dipple Hardware has been (141) customers the best selection in home, garage and garden tools and equipment. Now, with our new online ordering system, we’ve made p...
A.
satisfying
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following
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protecting
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offering
【单选题】57（） A．exclude within B．include C．are confined D．are included
A.
In 1959 the (41) American family paid $ 989 (42) a year’ s supply of food. In 1972 the family paid $1 311. That was a price (43) of nearly one-third.
B.
Every family has (44) this sort of experience. Everyone agrees that the cost of (45) a family has risen sharply. But there is less agreement (46) reasons for the rise are being discussed. Who is really (47)
C.
Many blame the farmers who (48) the vegetables, fruit, meat, eggs and cheese (49) stores offer for (50) . According to the U.S. Department of (51) , the farmer’s share of the $ 1 311 spent by the family in 1972 was $ 521. This was thirty-one percent (52) than the farmer had received in 1959.
D.
But farmers claim that this increase was very small (53) to the increase in their cost of (54) . Farmers tend to blame others for the sharp (55) in food prices. They particularly blame those who (56) the farm products after the products leave the farm. These (57) truck drives, meat packers, manufacturers of packages and other food containers, and the (58) of stores where food is sold. They are among the "middlemen" who stand (59) the farmer and the people who buy and eat the food. (60) middlemen the ones to blame for food price