1.选择题- (共6题)
6.盐溶液受盐的水解影响,导致性质具有一定的复杂性.在0.1mol•L﹣1的重铬酸钾(K2Cr2O7)溶液中存在如下平衡:Cr2O72﹣+H2O⇌2HCrO4﹣⇌2CrO42﹣+2H+
2.单项选择- (共4题)
7.
Mr. Brown doesn’t feel at _______ease for the time being for _______ little money the present job brings him can hardly support his extended family.
A./; the | B.an; the | C.an; / | D.the; a |
9.
John invited approximately 40 guests to his wedding, most of _______ are family members.
A.whom | B.that | C.them | D.which |
试卷分析
-
【1】题量占比
选择题:(6道)
单项选择:(4道)
-
【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:1
5星难题:0
6星难题:3
7星难题:0
8星难题:0
9星难题:0