D. rises lower and lower

答案C

解析细节理解题。由第二段第二句可知, 随着海啸离陆地越来越近, 它越来越高。

4When a tsunami is coming, .

A. people will feel the sea wave

B. the government will warn people

C. the weather bureau will move to the radio stations

D. the weather will be terrible

答案B

解析推理判断题。由第三段可知, 气象局在海啸来临时会警告人们, 由此可推出答案。

5According to this passage, .

A. a tsunami can't cause lots of trouble

B. people can save their lives when a tsunami is coming

C. the warning from the weather bureau can help people save their lives

D. no one can escape when a tsunami is coming

答案C

解析细节理解题。由短文最后一句可以得出, 气象局的警报有助于挽救人们的生命。

　　There are a lot of strong tsunamis because of the size of the ocean and large earthquakes there. In open seas tsunamis are only one or two metres high. But when they are near the land, they can be as high as six or seven metres.

　　Houses and cars near the sea can be swept away by these big waves. Because tsunamis move fast and can travel to the other side of the sea within one day, they may affect a lot of places.

　　Do you know the worst tsunamis in history in the world?Look through the following list.

Worst tsunamis

Location Year Deaths Indian Ocean 2004 150, 000 South China Sea 1782 40, 000 South Java Sea 1883 36, 500 Tokaido-Nankaido, Japan 1707 30, 000 Sartriku, Japan 1896 26, 360 Northern Chile 1868 25, 674 Southwest Kyushu Island, Japan 1792 15, 030 Moro Gulf, Philippines 1976 8, 000 Tokaido-Kashima, Japan 1703 5, 233 Nankaido, Japan 1605 5, 000