人参的主产地是()
A.浙江
B.福建
C.河南
D.吉林
E.江苏
参考答案:D
We are going to discuss the way of reading works ______ it is used for real life purposes, and this should give you a better understanding of it.
A.that B.whichC.where D.when
克汀病是由于缺乏哪种营养素引起()
A.锌
B.钙
C.硒
D.碘
E.铁