在一定海拔高度的山区,雨量充沛,云雾多,空气湿度大,漫射光丰富,蓝、紫光比重增加,这也就是高山云雾茶()含量较高,()含量相对较低的主要原因。
参考答案:氨基酸、茶多酚或儿茶素
William Tell hesitated to let his boy risk __ there with an apple on his head.
A.standing
B.stood
C.to stand
D.to be standing
构成人体的基本物质是
A.清气
B.阴气
C.阳气
D.精气
E.地气