1．What is taken from the Scottish Blackface ewe?

A．A fertilized egg cell.

B．An unfertilized egg cell.

C．A completely empty egg cell.

D．An embryo.

答案　B　[细节理解题。根据第二幅图画可知答案为B。]

2．Which picture shows how cell division first begins?

A．Picture 2. B．Picture 3.

C．Picture 4. D．Picture 5.

答案　B　[细节理解题。根据第三幅图画中的jump­starting cell division可知答案为B。]

3．What we can learn from the pictures is that ________.

A．Dolly has the similar genes to the Finn Dorset ewe

B．Dolly has the similar genes to the Blackface ewe

C．Dolly has no genes from the Finn Dorset ewe and the Blackface ewe