All of the following are true about the 1970 survey of Antarctica EXCEPT that it ______

Đáp án D

Dẫn chứng “Radio waves from the survey equipment penetrated the ice and revealed a body of water of indeterminate size. It was not until much more recently that data collected by satellite made scientists aware of the tremendous size of the lake; the satellite-borne radar detected an extremely flat region where the ice remains level because it is floating on the water of the lake.”