题干
American women usually identify their best friend as someone ________they can talk frequently.
A：who
B：about which
C：a
D：with whom
答案(点此获取答案解析）
D
、
各
的溶液，阴极析出的金属单质或气体的总物质的量(y)与导线中通过电子的物质的量(x)的关系如图所示。对离子氧化能力的强弱判断正确的是(选项中
为氢离子)（ ）