随着社会的发展,科学的养生保健理念越来越受人们的欢迎。人体中化学元素含量的多少直 接影响健康,缺乏下列哪种元素易导致贫血症 [ ]
A.钙
B.碘
C.锌
D.铁
答案:D
_____ Mom had asked Jack to close the window before he went out,______ he forgot to do it.
A.Though; /
B.Though; but
C.Till; /
D.Until; then
VBA的自动运行宏,应当命名为______。