煤的煤化程度越深,其真相对密度越(),矿物质含量越多,真相对密度越()。
A.大大
B.小小
C.小大
D.大小
参考答案:A
The director of the Bronx zoo has offered a reward ors 1000 to _________ can capture the lion alive or dead which escaped from the zoo.
A.anyone
B.who
C.whoever
D.whom
对鼓膜的错误描述是()
A.构成鼓室外侧壁
B.为一椭圆形半透明的薄膜
C.分为松弛部和紧张部
D.鼓膜的前上方有一反光区称光锥
E.鼓膜中心向内凹陷为鼓膜脐