克山病的发病原因之一是由于缺乏()
A.磷
B.铁
C.硒
D.锰
E.钙
参考答案:C
解析:克山病的发病原因是由于缺乏硒。
用所给的单词的正确形式填空,每个词只用一次
short, want, ,it, clothes, good
小题1:They eat _____ and they are healthy.
小题2:Does Lucy _______ to have a big bookcase?
小题3:Dave likes sports, but he doesn’t play _______.
小题4:The trousers are too long for her. She is _______.
小题5:Come to see the new _______ in Rose Store!
如果企业安排你对企业的物流中心网络的布局进行设计,你应该主要考虑哪些方面?