单项选择题

Which of the following is the best title for this passage

A．Sexual Discrimination.
B．Sex Selection.
C．Differences between Girls and Boys.
D．Henry III and His Six Wives.
<上一题 目录 下一题>
热门 试题

单项选择题
Which of the following statements is true according to this passage
A．"Girl sperm" is much bigger than "boy sperm".
B．"Girl sperm" contains more genetic material.
C．"Girl sperm" has more cells than "boy sperm".
D．"Girl sperm" is more purified than "boy sperm".
单项选择题
According to this passage, the practice of sex selection ________
A．can help to prevent all genetic diseases
B．is totally unacceptable to ethics experts
C．was already realized five hundred years ago
D．will benefit some families which need both boys and girls
相关试题