海啸由地震引起海底隆起和下陷所致。海底突然变形,致使从海底到海面的海水整体发生大的涌动,形成海啸袭击沿岸地区。
参考答案:对
某学生遇到难题时,会仔细思考,甚至连喜爱的动画片也不去看,表明该生具备哪种品质( )
A.独立性
B.果敢性
C.坚定性
D.自制力
Plastic bags are provided for our convenience but they have also_______ the pollution of the environment.
A.adapted to
B.turned to
C.contributed to
D.looked forwarded to