Decide which of the choices given below would best complete the passage if inserted in the corresponding blanks. Mark the best choice for each blank on your answer sheet.

　　The “standard of living” of any country means the average person's share of the goods and services the country produces. A country's standard of living, ____31_______, depends first and     32       on its capacity to produce wealth. “Wealth” in this sense is not money, for we do not live on money     33     on things that money can buy: “goods” such as food and clothing, and “services” such as transport and “ __34 __ ” .

　　A country's capacity to produce wealth depends upon many factors, most of     35     have an effect on one another. Wealth depends    36      a great extent upon a country's natural resources. Some regions of the world are well supplied with coal and minerals, and have a fertile soil and a     37    climate; other regions possess none of them.

　　Next to natural resources     38     the ability to turn them to use. China is perhaps as well    39    as the USA in natural resources, but suffered for many years from civil and     40     wars, and     41    this and other reasons was     42     to develop her resources.      43     and stable political conditions, and          44    _____ from foreign invasion, enable a country to develop its natural resources peacefully and steadily, and to produce more wealth than another country equally well      45    by nature but less well ordered.

　　A country's standard of living does not only depend upon the wealth that is produced and consumed   46  it own borders, but also upon what is indirectly produced through international trade.    47    Britain's wealth in foodstuffs and other agricultural products would be much less if she had to depend only on    48   _ grown at home. Trade makes it possible for her surplus manufactured goods to be traded abroad for the agricultural products that would          49   be lacking. A country’s wealth is, therefore, much influenced by its manufacturing capacity,     50     that other countries can be found ready to accept its manufactures.

　　31. A. however B. therefore  C. nevertheless   D. furthermore

　　32. A. primary      B. principal   C. foremost     D. uniquely

　　33. A. or     B. nor        C. but        D. except

　　34. A. recreation       B. enlightenment  C. refreshment       D. entertainment

　　35. A. if     B. them    C. which      D. that

　　36. A. with      B. for         C. to           D. on

　　37. A. neutral     B. favorabl  C. virtuous      D. marine

　　38. A. comes    B. come    C. coming       D. came

　　39. A. off    B. known     C. done D. furnished

　　40. A. military    B. external    C. contemporary       D. domestic

　　41. A. for   B. because    C. because of       D. due to

　　42. A. Impossible       B. Incapable    C. unable             D. proficient

　　43. A. Strong   B. Sturdy       C. Sound   D. Robust

　　44. A. liberty     B. freedom C. prevention     D. liberation

　　45. A .assisted     B. avenged      C. rescued     D. served

　　46. A. with     B. within       C. near    D. without

　　47. A. In short    B. For example C. firstly   D. On one hand

　　48. A. those  B. what   C. that          D. it

　　49. A. likely   B. likewise      C. certainly       D. otherwise

　　50. A. provided   B. depended   C. given          D. supposed

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