提取RNA的过程中需要注意下列哪些事项（ ）。 A: 整个操作戴口罩和一次性手套 B: 离心机使用之前预冷到4 ℃ C: 配制溶液的水都是无RNase的水 D: 所有工具都是RNA-special

__________ （特别的事）to celebrate A: Anything special B: Special anything C: Special something D: Special thing

【单选题】Nancy: Do you have anything special to do this afternoon? Bill: __________________. A. anything special B. special anything C. nothing special D. special nothing

给div id=”special”定义CSS,正确的是 A: .special{} B: C: special{} D: div.special{} E: :special{}

Old Henry is so lonely that he hopes to know about ____ every day. A: special something B: special anything C: something special D: anything special

Failure to delivery belongs to ________________ additional risks. A: general B: special C: general and special D: general or special

（） could animals be hunted in this are A: Only in very special cases B: In very special cases only C: Only very in special cases D: In only very special eases

There are also some other special test facilities available for special purposes．

special

Journalscanbeclassifiedinto_________journalsand__________journals. A: general、special B: special、journalentry C: revenue、expense D: Noneoftheabove.