问题
选择题
关于现代生物技术相关知识的叙述，其中正确的是 [ ]
A．动物细胞培养与动物组织培养过程均需使用胰蛋白酶处理
B．试管苗、试管牛和克隆羊都属于无性生殖且能保持母本性状
C．用DNA连接酶将一个目的基因和质粒连接形成重组DNA分子
D．将玉米花粉和水稻花粉进行细胞杂交，获得的植株为二倍体，且可育
答案
答案：C
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关于现代生物技术相关知识的叙述，其中正确的是 [ ]
A．动物细胞培养与动物组织培养过程均需使用胰蛋白酶处理
B．试管苗、试管牛和克隆羊都属于无性生殖且能保持母本性状
C．用DNA连接酶将一个目的基因和质粒连接形成重组DNA分子
D．将玉米花粉和水稻花粉进行细胞杂交，获得的植株为二倍体，且可育
答案：C
| 用方框中所给单词的适当形式填空。 | |
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| 1. I forgot my homework. I must go home to _ it. 2. Would you mind _ your cartoon book to me? 3. He is strong enough to _ the heavy box. 4. My grandpa _ the flowers to the garden just now. 5. —Can you _ your photos to school tomorrow? —Certainly. 6. —Would you mind the door? I feel kind of cold. —Not at all. I'll do it right away. 7. Jim's parents are both disabled. They are _ to get good jobs to make more money. 8. I gave my grandparents a dog as a gift last year. Now'it has _ their life with a lot of pleasure. 9. There are about one billion people in the world suffering from . 10. After the terrible earthquake, many people in Sichuan became . |