指数体系是指什么？
参考答案：
有广义狭义之分，狭义的指数体系由狭义的指标体系各指标所对应的指数构成。
补全对话。
A: I have a new dress.
B: Really? 1_____
A: It's blue.
B: 2_____
A: Sure.
B: Oh! 3_____
A: Thank you.
a. It's nice.
b. What colour is it?
c. May J have a look?
—______ is the population of Canada?
—I don't know. But I know it's ______ than that of China. [ ]
A. What; smaller
B. How much; smaller
C. How much; less
D. What; larger
