第11题: [单项选择]According to this passage, the practice of "sex selection" ______. A. can help to prevent all genetic problems B. is totally unacceptable to ethics experts C. was already realized five hundred years ago D. will benefit families with certain inheritable diseases 参考答案:D 答案解析:[定位] 第2段第1句。
[解析] 该句中的genetic暗示有些疾病是遗传的,即如选项D所述。
[点睛] 第1句同时表明选项A的说法是不全面的。选项B与第2段最后两句正好相反。第1段