国家开放大学 / 综合英语（3）
正确率：100%
The light from the sun moves away from its source in all directions, so its strength is very _ _ _ _ _ _ _ .
A.broken out
B. spread out
C. looked out
D.figured out
A.broken out
B. spread out
C. looked out
D.figured out
参考答案：
佳题速递：