在植物细胞中与植物制造有机物直接有关的结构是………（ ）
A．线粒体
B．叶绿体
C．核糖体
D．内质网
答案：B
题目分析：植物叶片细胞中含有叶绿体，能进行光合作用，叶绿体中的色素能够吸收光能．叶绿体可将光能转变成化学能，并将化学能储存在它所制造的有机物中．线粒体将储存在有机物中的化学能释放出来，供细胞利用．核糖体、内质网与蛋白质的合成有关。因此，选项A.、C.、D.不符合题意．
| 选词填空，根据对话内容，用方框中所给词的适当形式填空。 | |
B: Thank you. By the 1 , who won the girls' long jump? A: Sorry, I don't know. Do you know it,Jim? C: Kate from Class One is the winner. She jumped 2 than two meters and fifty-six. B: Great! It's a new school record. A: Well 3_ ! I have to go now. The girls' relay race is the next. B: Good 4 !I hope you will win. A: Thank you very much. See you _5 ! |