Tsunami (海啸)is a natural disaster,which is a Japanese word that means “sea wave”.A tsunami is a huge sea wave that forms mainly in the Pacific Ocean area.People die and property is destroyed when a tsunami hits land.What causes these dangerous sea waves?Sometimes,tsunamis are caused when earthquakes take place underwater.Then,water begins to move up and down from the top of the ocean right down to the bottom.Waves begin to form,and each wave is called a tsunami.
A tsunami is less than one meter high and can move at a speed of almost 800 kilometers per hour while it is far out in the ocean.But the tsunami rises much higher and moves more slowly as it comes closer to land.
The weather bureau(气象局)warns people over the radio and television when a tsunami is heading for land.These warnings have helped save many lives.
32. The Japanese word “tsunami” means .
A.earthquake B.sea wave C.ocean water D.tornado
33.According to the passage,a tsunami can be caused by .
A.an underwater earthquake B.heavy rains
C.waves hitting land D.tornado
34. As the tsunami moves toward land,it .
A.picks up more speed B.becomes far less dangerous
C.rises higher and higher D.rises lower and lower
35. According 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
BACC
A. Profits enlarging B. Technology developing C. Education investing D. Benefits transferring E. Dominance disappearing F. A nation rising |
The following is an imaginary diary entry written by US president. This diary is part of Global Trends 2025, which was written by the US National Intelligence Council
80
The
81
The
82
Global wealth and economic power will shift from West to East.
83
84
The transition from old fuels to new will be slow, as will the development of new technologies that present feasible alternatives to fossil fuels or help eliminate food and water problems. All current technologies are inadequate, and new ones will probably not be commercially possible by 2025