英语四级

单选题根据下面资料,回答题
E1 Nino is the name given to the mysterious and often unpredictable change in the climate of the world. This strange 1 happens every five to eight years. It starts in the Pacific Ocean and is thought to be caused by a failure in the trade winds (信风), which affects the ocean  currents driven by these winds. As the trade winds lessen in 2, the ocean temperatures rise, causing the Peru current flowing in from the east to warm up by as much as 5℃.
The warming of the ocean has far-reaching effects. The hot, humid(潮湿的) air over the ocean causes severe 3 thunderstorms. The rainfall is increased across South America, 4 floods to Peru. In the West Pacific, there are droughts affecting Australia and Indonesia. So while some parts or the world prepare for heavy rains and floods, other parts face drought, poor crops and 5 .
E1 Nino usually lasts for about 18 months.The 1982-1983 E1 Nino brought the most 6 weather in modern history. Its effect was worldwide and it left more than 2000 people dead and caused over eight billion pounds 7 of damage. The 1990 E1 Nino lasted until June 1995. Scientists 8 this to be the longest E1 Nino for 2000 years.
Nowadays, weather experts are able to forecast when an E1 Nino will 9, but they are still not 10 sure what leads to it or what affects how strong it will be. it will be.
A. estimate
B. strength
C. deliberately
D. notify
E. tropical
F. phenomenon
G. stable
H. attraction
I. completely
J. destructive
K. starvation
L. bringing
M. exhaustion
N. worth
O. Strike
第(1)题选

参考答案:F进入在线模考
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