问题
填空题
用reflect的适当形式填空。
1. After ____ for a time, he decided not to go there.
2. The mountains ____ in the lake were very beautiful.
答案
1. reflecting 2. reflected
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用reflect的适当形式填空。
1. After ____ for a time, he decided not to go there.
2. The mountains ____ in the lake were very beautiful.
1. reflecting 2. reflected
，放出
，充分反应后固体的质量增加2.28 g，试通过计算判断气体 A的组成及各成分的质量。