2. 外语
  3. Scientists around the world have been studying the warm 【S1】_____ of waters in the Pacific Ocean being known as EL Nino.

Scientists around the world have been studying the warm 【S1】_____ of waters in the Pacific Ocean being known as EL Nino.

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问题 Scientists around the world have been studying the warm         【S1】_____
of waters in the Pacific Ocean being known as EL Nino. The          【S2】______
appearance of EL Nino is knowing to affect weather around           【S3】______
world. Now scientists still do not completely understand            【S4】______
them. Yet they find they can use it to tell the future in           【S5】______
different area in the world. The scientists write about             【S6】______
their recent work in the magazine Nature. Their computer            【S7】______
program can hardly tell when an EL Nino will appear. They           【S8】______
suggest that this could provide for an effective early warning      【S9】______
system and could prevent much of the disasters from happening.      【S10】______
选项
答案warm→warmth
解析 the和of中间明显缺名词，而warm的名词形式为warmth。
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