第7题: [单项选择]已知环比增长速度为5.6%、7.1%、8.5%、6.4%,则定基发展速度为()。 A. 5.6%×7.1%×8.5%×6.4% B. (105.6%×107.1%×108.5%×106.4%)-100% C. (5.6%×7.1%×8.5%×6.4%)100% D. 105.6%×107.1%×108.5%×106.4% 参考答案:D 答案解析:如果增长速度为5.6%,则发展速度为105.6%。同理可得各发展速度。定基发展速度为各个发展速度的乘积。
第29题: [单项选择]Questions 19 to 21 are based on the conversation you have just heard. A. Food canning. B. Kinds of fish. C. A new snack food. D. A food flavoring. 参考答案:C 答案解析:[听力原文] 19-21 W: I’ve been reading about a new healthful snack food (19) . It’s made from fish. Ha