[单项选择]The increasing popularity of the motorcycle as a convenience, economical form of transportation has been just short of astounding.
A. popularity
B. convenience
C. form
D. just short

Section Ⅰ Use of English Directions: Read the following text. Choose the best word(s) for each numbered blank and mark A, B, C or D on ANSWER SHEET 1. (10 points) You hear a great many complaints today about the excessive security consciousness of our young people. My complaint is the (1) :in the large organizations especially, there are not enough job opportunities for those young people who need challenge and risk. Jobs in which there is greater emphasis on (2) performance of well-organized duties (3) on imagination especially for the beginner—are to be found, for instance, in the inside jobs (4) banking or insurance, (5) normally offer great job security but not rapid promotion or large pay. The same is (6) most government work, of the railroad industry, particularly in the clerical and engineering branches, and (7) most public (8) . The book keeping and accounting areas, especially in the larger compa
A. of
B. in
C. with
D. by

Resources can be said to be scarce in both an absolute and relative sense: The surface of the Earth is finite, imposing absolute scarcity; but the scarcity that concerns economists is the relative scarcity of resources in different uses. Materials used for one purpose cannot at the same time be used for other purposes; if the quantity of an input is limited, the increased use of it in one manufacturing process must cause it to become less available for other uses.
The cost of a product in terms of money may not measure its true cost to society. The true cost of, say, the construction of a supersonic jet is the value of the schools and refrigerators that will never be built as a result. Every act of production uses up some of society’s available resources; it means the foregoing of an opportunity to produce something else. In deciding how to use resources most effectively to satisfy the wants of the community, this opportunity cost must ultimately be taken into accou
A. The scarcity of manufactured goods.
B. The value of scarce materials.
C. The manufacturing of scarce goods.
D. The cost of producing shoes.