照样子(替换、增加、去掉都可以) 改写单词并组成词组。

1. bag    big        a big apple                    2. cap                                

3. set                                                    4. now                                

5. book                                                 6. hat                                   

7. same                                                 8. shirt                                 

9. read                                                  10. here                                

当日结算价是指某一期货合约当日成交价格按照成交量的加权平均价。当日无成交价格的，以上（）交易日的结算价作为当日结算价。

A.1

B.2

C.3

D.4