According to the passage, 1997 witnessed

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According to the passage, 1997 witnessed ____.

the largest number of summits on the subject of climate change

the most important summit on climate change taking place in Kyoto, Japan

the highest attendance by representatives from 180 industrialised countries

widespread concern about climate change

Giải thích

Đáp án B
Giải thích: Từ khóa: 1997. Từ khóa được tìm thấy trong câu 2 đoạn 5: Of these summits, the most important took place in Kyoto in Japan in 1997. Đọc thêm câu trước đó thì ta biết những summits này là về climate change.