(单选题)

Which of the following statements is TRUE according to the passage?

A.Doctor Severino Antinori is strongly opposed to cloning human beings.

B.Up to now, seven kinds of animals have been cloned, including sheep, cats, humans and rabbits.

C.Professor Rudolf Jaenisch is carrying out an experiment on cloning an eight week old embryo.

D.Ronald Green doubts about the future successful birth of so called cloned embryo.

参考答案：D

参考解析：

细节理解题。根据第六段第一句“it was unlikely that an eight week old pregnancy would lead to a birth.”可知，对于这个克隆宝宝的顺利出生持有怀疑的态度。故选D。

知识点：阅读理解四选一英语专业基础知识阅读理解教师招聘-小学英语