Choose the correct answer to indicate the sentence that is closest in meaning to the original one in...

20/24

Scientists have observed a drop in ozone levels over the Antarctic.

Scientists have recorded a decrease in the levels of ozone over the Antarctic.

Scientists have not noticed any rise in ozone levels in the Antarctic.

Ozone levels over the Antarctic are dropping and it concerns scientists.

The Antarctic has the highest drop in ozone levels observed by scientists

Giải thích

Dịch nghĩa: Các nhà khoa học đã quan sát thấy sự sụt giảm nồng độ ozon ở Nam Cực.

= Các nhà khoa học đã ghi nhận sự sụt giảm nồng độ ozon ở Nam Cực.