漂浮生物。

已知函数f（x）=x²+xsinx+cosx．

（1）求f（x）的最小值；

（2）若曲线y=f（x）在点（a，f（a））处与直线y=b相切，求a与b的值．

假日旅游已经成为生活时尚，如果我想在国庆节期间去参观半坡原始居民遗址，了解先民们的生活，你能告诉去哪里吗[ ]

A．陕西      

B．北京      

C．浙江      

D．云南

When the spaceship traveled above, _____ new-looking earth appeared before us, ____ earth that

 we had never seen before. [ ]

A. the; the

B. a; an

C. an; the

D. the ;an

—______ he said at the meeting made everyone present angry.

—Yes.We all ______ him of his rudeness.

A．That；accused

B．What；accused

C．That；charged

D．/；charged

教育费附加应按纳税人实际缴纳增值税、消费税、营业税的（）缴纳。

A、1%

B、3%

C、5%