注意：此页面搜索的是所有试题
题目内容
（乐山师范学院综合英语）
Scientists have tried many ways to prevent the nuclear reactions from ______ harmful and dangerous radiation.
A. giving up
B. giving in
C. giving to
D. giving off
A. giving up
B. giving in
C. giving to
D. giving off
参考答案
