A-A+
Which of the following is true of the research
问题详情
Which of the following is true of the research led by Lee Niswander？
A．It aims to find how much folic acid to recommend for mothers-to-be.
B．It studies mutations that cause birth defects in mice.
C．It finds a large dose of folic acid is surprisingly bad for mice.
D．It discovers the higher folic acid diet is harmful to humans.请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：C
解析：事实细节题。第四段第一句提到“令研究人员惊奇的是…较多服用叶酸看来使出生缺陷更加严重而不是弥补缺陷”。而[C]“研究发现大量的叶酸竟然对鼠类有害”是对该句的同义转述，故[C]正确。第三段前两句表明该项研究是为了探究“叶酸如何影响胚胎发育”的，因此[A]“它旨在找出应向准妈妈们推荐多大剂量的叶酸”和[B]“它研究的是导致鼠类出生缺陷的几种变异”都是错误的；[D]中的humans换做mice就对了。
