A:染色体是生物体的遗传物质,DNA也是生物体的遗传物质
B:真核和原核生物细胞中的遗传物质都是DNA
C:病毒的遗传物质都是RNA
D:DNA是遗传物质,遗传物质是DNA
补全对话。
A: Hi, Chen Jie. ____
B: I'm fine, thank you.____
A: I'm not feeling well today.
B: ____
A: I have a headache.
B: I see. ____
A: Yes, I feel very tired.
B: You must go home and have a rest.
A: ____
shorts sing friends white dress
Look at this picture. I am the girl. My name is Lisa. I have two ____ . They are Peter and Bob. Peter has a nice T-shirt and a pair of____. Bob has a
____ T-shirt. I have a beautiful____. We can____and dance. We are happy.
下列各句中,没有错别字且注音全对的一项是( )