Scientificexperiments
- 习题库
- 关注:2.41W次
问题详情:
Scientific experiments __________ by students without the teachers’ instructions can be dangerous.
A. carry out B. carrying out C. carried out D. carrying
【回答】
C知识点:分词
题型:选择题
标签:
- 文章版权属于文章作者所有,转载请注明 https://zhongwengu.com/exercises/d8goo7.html