h can help the development of many other research areas.
B The results of the research can help the development of biodiversity estimates.
C The results of the research can help our understanding of infectious disease evolution.
D The results of the research can help our understanding of "survival of the fittest. "
42. What was scientists' understanding of cryptic species?
A They occurred in equal numbers in all biogeographical regions.
B They were mostly found in insects and reptiles.
C They were likely to be in tropical rather than temperate regions.
D Both Band C.
43. Do scientists know how many cryptic species exist?
A Not yet.
B Yes, they do.
C They will know the answer in another one or two-years.
D They will never know the answer.
44. Which of the following about the African bush elephant and the African elephant is true?
A The WCU are interbreeding those elephants.
B They are interbreeding species.
C They are two genetically distant species.
D They depend on each other for survival.
45. People were confused in their attempts to control malaria in Europe in the early 1900s. because scientists
A identified only one mosquito species instead of six species.
B thought only three mosquito species transmitted disease.
C thought there was only one mosquito species.
D did not know what species was being studied.
第5部分:补全短文(第46~50题,每题2分,共10分)
阅读下面的短文,文章中有5处空白,文章后面有6组文字,请根据文章的内容选择5组文字,将其分别放回文章原有位置,以恢复文章原貌。请将答案涂在答题卡相应的位置上。
Comparative Labor Costs
46 . Together, they constitute the unit labor cost involved in producing a commodity.
Some countries may find that the labor wages are very low, yet they are not in a competitive position when trading with other countries, whose labor wages are very high.
47 . On the other hand, some countries find that their productivity is much higher than that of their trading partners, yet they are not in a competitive trading position either. This is because their labor wages are much higher than those of their trading partners. 48 . For instance, wages are low in most developing countries. 49 . Their productivity is low too. Success depends on the unit labor cost of the products in certain industries, such as radio production and television set assembling, unit labor cost may be low, and thus they would be in a competitive position, while in others, low labor wages are offset(抵消) by very low productivity. Their unit labor cost is high and they are in an unfavorable position in trading with other countries.
Unit labor cost is an important determinant of prices of manufactures goods, but other costs also influence prices:notably, those of capital, energy, and raw materials. 50 .
A Moreover, a country’s competitive position is not solely determined by price salesmanship(销售术),credit terms, adherence to delivery schedules and so on also affect competitiveness
B At least two factors determine a country’s comparative position:labor productivity and wage level
C So it is the unit labor cost which determines the competitive position, but not only low wages or only high productivity
D This may be because they neglect their low productivity
E Does this mean that these countries are in a favorable position in trade?It is not necessarily so
F Generally speaking, all the countries are paying more and more atte
本论文由英语论文网提供整理,提供论文代写,英语论文代写,代写论文,代写英语论文,代写留学生论文,代写英文论文,留学生论文代写相关核心关键词搜索。