第24题: [单项选择]It is reported that crimes are most likely to happen in cities __________ a large percentage of unemployment. A. which they have B. that having C. that have D. where have 参考答案:C 答案解析:定语从句。据报道,在失业率高的地区最容易发生犯罪。▲that在定语从句中作主语,其先行词是cities。虽然where能修饰cities,但它不能在从句中作主语。