小题1: Mid-autumn Day is one of the most important ________(节日) in China.

小题2:The ______(较少) water you’ve wasted, the more contributions you have made.

小题3:Don’t forget to send me a message when your father _____(到达)in Beijing.

小题4:Many students are _______ (计划 )to go traveling after the exam these days.

小题5: It is _____(不可能的) to learn English well if you are afraid of speaking in public.

小题6:Since last year, our school has _____( 提供) our students with delicious breakfast.

金融期货的交易制度主要包括（）。

①集中交易制度

②大户报告制度

③限仓制度

④每日价格波动限制及断路器规则

A.①、②、③

B.①、②、③、④

C.①、②、④

D.②、③、④