3D max 材质是V-Ray

简述养羊业在国民经济中的作用。

资本家获取绝对剩余价值的方法是

A、提高劳动生产率

B、延长工作日

C、改进生产技术

D、提高劳动强度

E、缩短必要劳动时间

What is the passage mainly about？

A．Steps to introduce yourself in America.

B．Greetings and introductions in America.

C．Introductions in the business world.

D．Table manner in America.

请帮忙给出正确答案和分析，谢谢！

我国绒用山羊品种有：()、()、()。

What is the normal way of dealing with the mans case？

A．More days will be given.

B．He can hand in the paper next term.

C．He has to take the course again.

D．He must hand in the paper as scheduled.

请帮忙给出正确答案和分析，谢谢！

全世界主要的山羊品种和品种群有150多个(我国有51个)。()