Teaching ethics to a machine even more intelligent than we are will be the bigger challenge.上句的谓语动词是：
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Most designers with existing labels are finding that there aren't comparable fabrics that can just replace what you are doing and what your customers are used to.根据本节所讲长难句断开原则，下列哪项是对上句的正确断开方式？
A. Most designers with existing labels are finding /that there aren't comparable fabrics /that can just replace /what you are doing and /what your customers are used to.
B. Most designers /with existing labels are finding that there aren't comparable fabrics /that can just replace what you are doing /and what your customers are used to.
There was a time in my life when people asked constantly for stories about what it's like to work in a field dominated by men.根据本节所讲长难句断开原则，下列哪项是对上句的正确断开方式？
A. There was a time/ in my life /when people asked constantly for stories /about what it's like to work in a field dominated by men.
B. There was a time in my life /when people asked constantly for stories about /what it's like to work in a field dominated by men.
While the kinds of instruction offered in these programs will differ, distance learning usually signifies a course in which the instructors post syllabi, reading assignments, and schedules on Websites, and students send in their assignments by e-mail.根据本节所讲长难句断开原则，下列哪项是对上句的正确断开方式？
A. While the kinds of instruction offered in these programs will differ, distance learning usually signifies a course /in which the instructors post syllabi, reading assignments, /and schedules on Websites, /and students send in their assignments by e-mail.
B. /While the kinds of instruction offered in these programs will differ,/ distance learning usually signifies a course /in which the instructors post syllabi, reading assignments, and schedules on Websites, /and students send in their assignments by e-mail.
下列哪类食物可以有效的降血脂，预防心脑血管疾病？
A. 白菜
B. 木耳
C. 胡萝卜
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