题目

下列说法正确的是（） A . 使用容量瓶配制溶液时，应先检漏，且干燥后才能使用 B . 使用pH试纸时用手捏住即可 C . 利用丁达尔效应鉴别蛋白质溶液和MgCl2溶液 D . 新制氯水保存在棕色广口瓶中 答案：CNext to our school there is a store.It's_____,but there are lots of school things _____it.Do you and your friends___rulers,pens or _______? Please come to the store.They _______those things at a very good _______.Big erasers are just two yuan ______.And small erasers are only one yuan.The pens are just on sale _____ three.yuan.Oh,I like that cartoon pencil sharpener.______ at the price! It's only two yuan.I'll take ________.Do you want school things? Just come here and see for yourself.1.A. short B. small C. long2.A. in B. of C. on3.A. have B. take C. need4.A. pencils B. watches C. clothes5.A. like B. buy C. sell6.A. store B. price C. table7.A. one B. every C. each8.A. for B. at C. to9.A. Look B. Watch C. Sce10.A. them B. it C. me