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91. The factories are _____ their production to cope with a mounting demand. A. adding up to B. lowering C. gearing up D. decreasing 92. The rising demand for _____ goods has helped stimulate the continuous growth in production. A. durable B. liable C. tolerable D. blamable 93. I have not seen him for twenty years, so I couldnt _____ him when I saw him yesterday. A. know B. recognize C. acknowledge D. realize 94. Many patients came with _____ of headache or haveing problems of not sleeping. A. explanations B. illustration C. comments D. complaints 95. The telecommunications revolution has made staying in ___ with family and friends a continent away easier. A. touch B. line C. connection D. contrast 答案： 91. C add up to 合计达，总括起来，意味着 lower 放下，降下，放低 gear up 使换快档, 促进, 增加;准备好，作好安排 | 
