下列与基因工程、细胞工程等生物科技相关的叙述，正确的是_刷题宝

题干

下列与基因工程、细胞工程等生物科技相关的叙述，正确的是

A：基因工程操作的核心步骤是获取目的基因

B：抗虫棉的培育是基因工程与细胞工程的综合应用

C：实现细胞工程的技术基础是细胞的全能性

D：基因工程不会造成生态和社会安全性问题

上一题下一题 0.0难度选择题更新时间:2020-02-08 10:51:35

答案(点此获取答案解析）

B

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如图是氢气在氯气中燃烧生成氯化氢的微观模拟图，请回答下列问题：

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What do you do last Monday? ____

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用所给动词的正确形式填空

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(一) 根据短文内容匹配。

Today is Sunday. The weather is fine. I go to the zoo with my parents. There are many animals at the zoo. Look！The pandas are eating bamboos(竹子) slowly. Two ducks are swimming in a lake. Two elephants are walking and a tiger is sleeping. I like monkeys best. They are jumping here and there. They like eating bananas. They are clever. Look! The bear is eating meat.
A. walking B. swimming C. eating D. sleeping E. jumping

⑴ ____

⑵ ____

⑶ ____

⑷ ____

⑸ ____

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按规律写数。

11 ____33 ____55 66

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