2. 外语
  3. Living things can also do many other things that non-living things cannot do. Living things take【C1】______ food, and grow by con

Living things can also do many other things that non-living things cannot do. Living things take【C1】______ food, and grow by con

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问题     Living things can also do many other things that non-living things cannot do. Living things take【C1】______ food, and grow by converting the food into their own【C2】______ . Living things can move. They can get energy they need for movement by breaking down food during the【C3】______ of respiration. They excrete the waste products of respiration. Living things respond【C4】______ stimuli such as heat, light, and touch. A bird and a tree are【C5】______ because they do all these things. Living things are made up of tiny units called cells. Some simple plants and animals, and all bacteria,【C6】______ of only one cell. Many biologists consider bacteria as plants, but some【C7】______ them as neither plants nor animals. The vast majority of living things are made up of countless【C8】______ of cells. All the living parts of cells are made up of large molecules【C9】______ proteins. There are thousands of【C10】______ of proteins in each cell.
【C5】
选项 A、living
B、alive
C、lived
D、live
答案B
解析 living可用作名词，常见的有make／earn a living。作为形容词，living只能作定语，不作表语。alive是形容词，意思是"有生命的"或"活的"，只作表语。另外两个选项显然不合适。
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