【单选题】His health is ______ .
A.
as poor as, if not poorer than, his sister's
B.
as poor, if not poorer than, his sister
C.
poor as his sister's if not poorer
D.
as poor, if not poorer than, his sister's
【多选题】以下属于用PHP进行MySQL数据库编程基本步骤的是___。
A.
在地址栏输入相应的URL,向网页服务器提出交互请求
【单选题】以下不属于用PHP进行MySQL数据库编程基本步骤的是()。
A.
在地址栏输入相应的URL,向网页服务器提出交互请求
【简答题】精密称取复方黄连素片粉末4.7306g,置索氏提取器中,用盐酸-甲醇(1:100)液提取至无色,移入100ml容量瓶中,加乙醇至刻度,摇匀。照柱层析法,精密量取10m1置氧化铝层析柱上,用30ml乙醇洗脱。收集洗脱液,置50ml量瓶中加乙醇至刻度,摇匀。精密量取5 m1 ,置10m1量瓶中加水至刻度,摇匀,照分光光度法,在430nm波长处,以50%乙醇为空白,分别测定盐酸小檗碱50mg/100ml...
【单选题】My aunt's health is ______, if not poorer than ______.
B.
as poor as, my uncle's
C.
so poor as, my uncle's
【单选题】—May I borrow your pencil, please? —Yes, of course. Here are some and you can take ________ of them.
【单选题】----May I borrow your pen, Mike ? ----Yes, of course. Here are some and you can take ______ of them.