委托指令根据（）有当日委托，当周委托，无期限委托，开市委托和收市委托等。

A．委托订单的数量

B．买卖证券的方向

C．委托价格限制

D．委托时效限制

阅读短文，然后用括号中所给词的适当形式填空。

It is Spring Festival time. It’s a小题1:   (fun) time to be with our family. What are you going to do? Let’s have a look at the Spring Festival and its fun activities.

The date of the Spring Festival always小题2:( change). Usually the date falls between the end of January and February 19. This year it falls on February 10. But the celebration小题3:(usual) starts one week before Spring Festival Eve.

Xiaonian: We usually clean小题4:(house) on this day. By小题5:(clean) , we can sweep bad luck away. Another thing we do is decorating our homes with spring couples (春联), paper-cuttings and the upside-down “fu” character.

Did you know all about “nian”? A long time ago, a monster (怪物) called Nian ate people on Spring Festival Eve. But Nian was afraid of loud noises, the color red and fire. So people小题6:(play) drums and gongs (锣) and set off fireworks. It scared Nian.

From then on, on Spring Festival Eve, people play drums and gongs, set off fireworks and put up red lanterns. We welcome the new year.