苍术的功效是
A．燥湿健脾
B．祛风湿
C．明目
D．发汗
E．消积
参考答案：A,B,C,D
I have two pen friends. One is American, and ______ is from Canada.[ ]
A. other
B. others
C. the other
D. the others
我国推广的加碘食盐是在食盐中加入一定量的碘酸钾（KIO3）,在KIO3中碘元素的化合价是 ( )
A．+1
B．+3
C．+5
D．+7
