The author refers to the ocean bottom as a “frontier” because it _______
Đáp án D
Tác giả đề cập đến đáy đại dương như là một "biên giới" bởi vì nó:
A. không phải là một lĩnh vực phổ biến cho nghiên cứu khoa học
B. chứa nhiều dạng sống khác nhau
C. thu hút những người khám phá dũng cảm
D. là một lãnh thổ không xác định
Why do teenagers have such a close relationship with their mobile phones?
The word "predecessors" in the last paragraph is closest in meaning to ________.
In what sense has the impact of phones been “local” in paragraph 3?
The navigation product launched in Sweden is helpful for drivers because ______.
When the writer first went to London, he was disappointed because ________.
From the passage, it can be inferred that the author views body building _____.
The author mentions the Dakota and the Ansonia in paragraph 3 because ________.
The word “moderate” in the fourth paragraph is closest in meaning to “______”.
The word “sumptuous” in paragraph 1 is closest in meaning to ________