Some of the worst storms are typhoons（台风）. Every year,about 80 typhoons hit different places around the world, The strongest ones are usually around the Pacific Ocean and the South China Sea. Most happed in July, August and September.

　　Why? When lots of seawater gets hot in the sun,it evaporates（蒸发）into the air. This makes the air hotter, too. When the air gets warm enough, it starts to move higher up into the sky. Then, cooler air around it rushes in to fill the space that is left. Once the air gets warmer, it starts to move more quickly, making wind. The wind goes in circles, and it keeps moving higher in the sky. The warmer the air gets, the more quickly the wind moves. And when the wind moves faster than 30 meters a second, a typhoons begins.

　　A typhoon has two parts. One is called the“eye”. This is right in the middle of a trphoon and is calm. The eye of a typhoon can be about 40 kilometers wide. In the eye, the wind does not move so fast, and there are not many clouds in the sky. The other part of a typhoon is the wall of clouds around the eye. This is where the strongest winds and hardest rains are.

A．it will disappear

B．it will evaporate

C．not mentioned in the passage

A．the wall of wind around the eye

B．the wall of clouds around the eye

C．the wall of air around the eye

(5) When do typhoons often happen around the year?

A．September, October and November

B．July, August and September

C．June, July and August

　　The seasons in Australia are opposite（相反）to ours. (1) it is winter here, it is summer there. Australia is (2) the south of the world. June, July and August are the winter months. The summer is in December, (3) and February. The north of the country is (4) than the south.

　　Australia's main（主要的）problem is water. A (5) large part of the country has no rain at all. But the east coast（海岸）has rain (6) the year round. There are no dry months here.

　　In March, 1982, there was a terrible drought（干旱）in Australia. The summer rain didn't (7) There were 138 million sheep in Australia that year. This was 14% of all the sheep in the world.

　　Because there was not (8) rain and the grass didn't grow well, the farmers (9) to sell many of their sheep and many sheep 10 , too. It was a great disaster（灾难）for Australia farmers.

　　完形填空。

　　The seasons in Australia are opposite (相反) of ours. 1 it is winter here, it is summer there.

　　Australia is 2 the south of the world. June, July and August are the winter months. The summer is the December, 3 and February. The north of the country is 4 than the south.

　　Australia's main (主要的) problem is water. A 5 large part of the country has no rain at all. But east coast (海岸) has the rain 6 the year round. There are no dry months here.

　　In March 1982, there was a terrible drought (干旱) in Australia. The summer rain didn't 7 . There were 138 million sheep in Australia in this year. This was 14% of all the sheep in the world.

　　Because of no 8 rain and the grass didn't grow well, the farmers 9 to sell many of their sheep and many sheep 10 , too. It was great disaster (灾难) for Australia farmers.

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