单选题
Little rain and higher temperature have ______ the shortage of water in these poor areas.
A. eased B. worsened C. excluded D. improved
A
B
C
D
【正确答案】
B
【答案解析】
[解析] ease缓解；worsen加剧，恶化；exclude拒绝接纳，把……排除在外，排斥；improve改善，提高
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