函数y中自变量x的取值范围是( ) A.x>3 B.x≠3 C.x≥3
The fact that she was foreign made ________ difficult for her to get a job in that country. A. so B. much C. that D. it
下列句子中没有语病的一项是( ) A.稻田里没有鸟害,如果不扎“稻草人”,不喷洒农药,鸟雀也不会上门。 B.为了防止学生因违反交通法
For three and a half months, I lived, studied and worked in London, England. During my time in the United Kingdom, I traveled to ten countries, I made new friends, took thousands of pictures and b
--Is this your eraser? --______________ A. No, I’m not B. Here you are. C. No, it is. D. No, it isn’t.
(08年昆明)有关电解水实验(如右图)的下列叙述,错误的是 ( )A.试管甲中的气体是氢气B.试管乙中的气体是氧气C.该实验
下列条件能判定△ABC≌△DEF的一组是( ) A.∠A=∠D,∠C=∠F,AC=DF; B.AB=DE,BC=EF,∠A=∠D C.∠A=∠D,∠B=∠E, ∠C=∠F; D.AB=DE,△ABC的
某铁的氧化物, 用1.4mol · L-1的盐酸50ml恰好溶解,所得溶液还能吸收56ml标准状况下的Cl2,使其中Fe2+全部转化为Fe3+, 则该氧化物的化学式为( ) A