문제 1
선택형
According to the text, What percent of Earth is covered by oceans?
According to the text, What percent of Earth is covered by oceans?
- One-half
- One-third
- Two-thirds
- Three-quarters

According to the text, What percent of Earth is covered by oceans?
다음 정의에 알맞은 단어는?-> 'a statement about what you think is going to happen in the future'
distance
forecast
spot
breathe
What unusual(=특별한) behavior do humpback whales exhibit while sleeping in the text?