为了检验溶液中是否有Cl-存在,最好选用下列物质中的( )
A.硝酸银溶液
B.四氯化碳
C.氢氧化钠溶液
D.硝酸酸化的硝酸银溶液
答案:D
Mike, whose ambition is to become a network engineer, was always ______from other boys by his programming ability.
A.prevented
B.separated
C.benefited
D.distinguished
鲁迅评价为“力透纸背”地描写了“北方人民的对于生的坚强,对于死的挣扎”的小说是( )
A.萧红的《生死场》
B.萧军的《八月的乡村》
C.吴组缃的《一千八百担》
D.叶紫的《星》