—Oh, I couldn't feel any . I hardly understood most of the questions they asked.
A:happier
B:better
C:worse
D:harder
写出下面的百分数.
下列哪项不是血浆的主要功能( )
联系《黄果树瀑布》全文,理解下列短语的含义:
①干瘪的概念;
②另一个瀑布;