4.
From the passage we know that _______.
A.
Kraemer and his team have succeeded in cloning a cat
B.
scientists try to implant a panda’s egg into a tiger
C.
Kraemer will work with Chinese scientists in clone researches
D.
about two thousand of species will probably die out in about a century
[答案解析]
本文介绍了科学家们正在运用克隆技术拯救如中国的大熊猫这种即将绝种的动物。