题目内容

It was at our college library _____ I borrowed the novel.

A. which
B. in which
C. that
D. where

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I have seen trees, _____ open at sunrise and close at sunset.

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A. most of whom
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A. in which
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Match the sentences with their explanations.一天晚上，女儿认为我关龙头动作不够快，不乐意了。2. We should conserve our resources. If we do so the resources will probably last long enough for scientists to find new solutions to our problems.我们必须节约资源，争取时间，使科学家来得及找到解决问题的新方法。3. His list contains ten items: energy, water, food, environment, poverty, terrorism and war, disease, education, democracy, and population. They are arranged in such a way that each item is more important than the one that follows it.他列出的问题清单，按重要性排序，依次是：能源、水、食品、环境、贫困、恐怖主义和战争、疾病、教育、民主，以及人口。4. Energy and water are the top two problems on the list. The reason is that if we start to solve these problems, the other problems that follow them on the list, such as food and poverty, will be easier to deal with.能源和水位居榜首，排在食品和贫困之前，其原因是解决前两个问题，后面的问题就比较容易解决了。5. Climate change will make droughts and floods worse. It will also change where and when rain will fall.气候变化会加剧旱灾和水灾，并改变降水的时间和地点。6. Research budgets have treated energy, defense and health as being more important than other areas …科研预算优先能源、国防和健康领域的项目……7. … even though solving the water problem would help solve energy, defense and health problems.……尽管解决水问题有助于解决能源、国防和健康方面的问题。