在碎屑岩中,组成岩石的主要粒级颗粒的含量大于75%,说明该岩石分选()。
A.较好
B.好
C.中等
D.差
参考答案:B
先有哈佛,后有美利坚合众国,这说明了哈佛在美国历史上的地位。( )
A. The fact that Harvard was founded before the United States of America testifies to its position in the American history.B. Harvard was founded at first, then was the United States of America. This proves that Harvard is quite important in the United States' history.C. The fact that the United States of America was founded before Harvard testifies to its position in the American history.D. The United States of America was founded at first, then was Harvard. This proves that Harvard is quite important in the United States' history.
《中药品种保护条例》不适用于()
A.中成药
B.天然药物的提取物
C.天然药物提取物的制剂
D.中药人工制成品
E.西药