第12题: [单项选择]The motivation of rapists is now (acknowledged) to be a more complex matter (than being) formerly believed; it (has come) to be widely accepted that rape is not (necessarily) the result of sexual desire. A. acknowledged B. than being C. has come D. necessarily 参考答案:B 答案解析:[解析] 此处完整形式为than (the motivation which) was formerly believed，省略主语。
