![](https://lstatic.shangxueba.com/sxbzda/h5/images/m_q_title.png)
[单选题]
When an earthquake occurs, __________ 查看材料A.people
A.A.people are killed and injured
B.B.rocks are breaking and shifting
C.C.destructive waves flood the coasts for miles
D.D.large sections of the earth"s rocky outer shell suddenly break and shift
![](https://lstatic.shangxueba.com/sxbzda/h5/images/tips_org.png)