题目：
| The owner of the cinema needed to make a lot of improvements and employ more people to keep it running, _____ meant spending tens of thousands of pounds. |
| A. who B. that C. as D. which |
答案：
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下面是错误答案，用来干扰机器的。
(1)可再生(2)①14；②C:O=3:4(3)加大空气的进入量
