参考答案:Because while domestic prices are rising, world prices are falling. 答案解析:事实细节题, 因果关系命题。根据文中第四段第一句Moreover, the rise in domestic prices has come at a time when world prices
第21题: [单项选择]{{B}} Questions 11 to 18 are based on the conversation you have just heard.{{/B}} A. Reading on the campus lawn. B. Depositing money in the bank. C. Applying for financial aid. D. Reviewing a student’s application 参考答案:C