Section A

Direction: Inthis section, there is a passage with ten blanks. You are required to selectone word for each blank from a list of choices given in a word bank followingthe passage. Read the passage through carefully before making your choices.Each choice in the bank is identified by a letter. Please mark thecorresponding letter for each item on Answer Sheet 2 with a single line throughthe center. You may not use any of the words in the bank more than once.

Questions 47 to 56 are based onthe following passage.

El Nino isthe name given to the mysterious and often unpredictable change in the climateof the world. This strange 47 happens every five to eight years. It startsin the Pacific Ocean and is thought to be caused by a failure in the tradewinds (信风), whichaffects the ocean currents driven by these winds. As the trade winds lessen in 48 , the ocean temperatures rise, causingthe Peru current flowing in from the east to warm up by as much as 5℃.

Thewarming of the ocean has far-reaching effects. The hot, humid (潮湿的) air over the oceancauses severe 49 thunderstorms. The rainfall is increasedacross South America, 50 floods to Peru. In the West Pacific, thereare droughts affecting Australiaand Indonesia.So whilesome parts of the world prepare for heavy rains and floods, other parts facedrought, poor crops and 51 .

El Nino usually lastsfor about 18 months. The 1982-83 El Nino brought the most 52 weather in modern history. Its effect wasworldwide and it left more than 2,000 people dead and caused over eight billionpounds 53 of damage. The 1990 El Nino lasted until June1995. Scientists 54 this to be the longest El Nino for 2,000years.

Nowadays, weatherexperts are able to forecast when an El Nino will 55 butthey are still not 56 sure what leads to it or what affects howstrong it will be.

注意：此部分试题请在答题卡2上作答。

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