Đáp án: 40°
Giải thích các bước giải: * Ghi nhớ: i (góc tới) = i' (góc phản xạ)
1. Although we are neighborhood, we have not seen each other
Despite
2. Even though I got very wet in the rain, I did not change my clothes.
In spite of
1.Although we are neighborhood, we have not seen each other
-> Despite.....................
2.Even though I got very wet in the rain, I did not change my clothes.
->In spite of....................
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