Question

下列具有同源染色体的细胞是

A．肝细胞	B．卵细胞
C．次级精母细胞	D．细菌

用所给词组的适当形式填空。（5分）

be able to     hear of     keep…down    fall in love     pick up

【小题1】Have you ever __________ __________ Donald Duck?
【小题2】She’s doing her homework. Would you mind _________ your voice_________?
【小题3】We often see the boy __________ __________ the litter in the school yard.
【小题4】He _________ __________ __________ drive a car when he was 18.
【小题5】Last summer Lisa went to Guilin. She __________ __________ __________ with it.

Answer 1

A
【小题1】heard of  
【小题1】keeping down  
【小题1】pick up     
【小题1】 was able to  
【小题1】fell in love解析:
略略