当采用电脑自动撮合成交方式时，期货价格的形成必须遵循的原则有( )。A．成本优先

下列诗文都出自唐代作家的一项是

①谈笑有鸿儒，往来无白丁。

②荡胸生曾云，决眦入归鸟。

③山随平野尽，江入大荒流。

④晨兴理荒秽，带月荷锄归。

A．①②③

B．②③④

C．①②④

D．①③④

介词填空。

l. I'd love to sail ____ the Pacific.

2. Here are some of the findings of a survey, ____ which thousands of students ____ China took part.

3. We received several different answers _____ the question.

4. What would you like to do _____ finishing your education?

5. Many students said they would like to work _____ interpreters or tour guides.

6. Quite a few dream _____ becoming famous.

7. Hold on _____ your dreams.

8. They'd like to be able _____ fly.

9. I can achieve that _____ working hard at school.

10. My dream is_____ become a famous person.

最能代表黄公望水平的艺术作品：（）

A.《富春山居图》

B.《千字文》

C.《六君子图》

D.《江岸望山图》

保列治（非那雄胺）治疗前列腺增生的机制是（）

A.抑制α受体

B.抑制5-α还原酶

C.抑制H₂受体

D.抑制β受体

E.抑制雄性激素受体

文件的内容要符合客观实际，即具有（）。