茶叶（）是衡量茶叶采摘和加工优劣的重要参考依据。
A.新
B.匀
C.净
D.纯
参考答案：B
At present an increasing number of parents wish to _________ changes in educating their children due to dissatisfaction with the educational system.
A．set out
B．bring about
C．set up
D．bring up
以下哪种提法不属于笛卡儿所理解的“实体”（）？
A、心灵
B、感觉
C、物质
D、上帝
