It can be interfered from the passage that ice would not be flat

23/50

It can be interfered from the passage that ice would not be flat if _______.

there were no lake

the lake were not so big

Antarctica were not so cold

radio waves were not used

Giải thích

Đáp án : A
Từ dòng 4 đoạn 2: satellite-borne radar detected an extremely flat region where the ice remains level because it is floating on the water of the lake. → không có nước thì tảng băng sẽ không thể trôi nổi và bằng phẳng