21．C 句意猜测题。从第一段的最后一句话My sister and two brothers had the same mean mother as I did.看出。
22．D 细节理解题。从文章第一段看出D项不是母亲要求做的。从文章第三段看出A、B、C都是母亲要求做的。
23．D 细节理解题。从文章第四段的Our marks in school had to be up to par(达到标准水平)．和文章倒数第二段的She forced us to grow up into educated and honest adults.看出答案。
