数学英语物理化学 生物地理
数学英语已回答习题未回答习题题目汇总试卷汇总练习册解析答案
科目: 来源: 题型:029
用所给单词的适当形式填空。
Can you think of ways ________ (keep) our classroom clean?
We can only make clones from ________ (live) DNA.
你能根据句意写出单词的正确形式
Some scientists are ________ (worry) about it.
根据句意写出单词的正确形式
Other people think human ________ (clone) is okay.
Many clothes are ________ (make) of cotton.
What else have scientists designed by ________ (change) DNA?
After a person or an animal ________ (die), we can't clone them.
I want to be a ________ (science) when I grow up.
You and your parents have the ________ (identify) DNA.
Meimei didn't go to school because of her ________ (ill).
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