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A、Port of Busan
B、Port of Shanghai
C、Port of Dalian
D、Port of Xiamen
此题为判断题(对，错)。
44 its economy continues to recover, the US is increasingly becoming a nation of part-timers and temporary workers. This " 45 " work force is the most important 46 in American business today, and it is 47 changing the relationship between people and their jobs. The phenomenon provides a way for companies to remain globally competitive 48 avoiding market cycles and the growing burdens 49 by employment rules, healthcare costs and pension plans. For workers it can mean an end to the security, benefits and sense of 50 that came from being a loyal employee.
41. [A] swarm [B] stride [C] separate [D] slip
42. [A] For [B] Because [C] As [D] Since
43. [A] from [B] in [C] on [D] by
44. [A] Even though [B] Now that [C] If only [D] Provided that
45. [A] durable [B] disposable [C] available [D] transferable
46. [A] approach [B] flow [C] fashion [D] trend
47. [A] instantly [B] reversely [C] fundamentally [D] sufficiently
48. [A] but [B] while [C] and [D] whereas
49. [A] imposed [B] restricted [C] illustrated [D] confined
50. [A] excitement [B] conviction [C] enthusiasm [D] importance
B．Main ideas are the central purpose of the speech while main points are smaller chunks related to the main ideA
C．Main ideas are signposts that lead the audience in a direction and main points transition between thoughts．
D．Main ideas and main points are the same thing．
A、Shanhaiguan Pass；Jiayuguan Pass
B、Badaling Section; the west of Gansu Province
C、Jiayuguan Pass；Shanhaiguan Pass
D、Yalu River; the west of Gansu Province
A、carbon black
B、carbon nanotube
C、graphene
D、nanoclay
B．the marginal cost of producing the good is zero．
C．the price of the good equals marginal cost．
D．the average revenue equals average cost．
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