填空题 Directions: Using the information in the text, complete each sentence 6-10, with a word or phrase from the list below. For each sentence(6-10), mark one letter(A-G)on your Answer Sheet. Do not mark any letter twice. A. work B. new technology C. American optimism D. a polarized society E. a developed society F. the chance to work in McDonald's G. the chance to learn skills and get well-paid jobs

填空题 A two-tier society is 1.

填空题 The ladder that has connected the bottom to the top refers to 1.

填空题 According to the passage, the main cause of farm-factory-office migration is 1.

填空题 In the author's opinion, the government didn't provide the poor with 1.

填空题 In the author's opinion, 1 is in for a severe challenge.