第二节:听取信息(共5小题;每小题1分,满分5分)
听下面一段独白,请根据题目要求,从所听到的内容中获取必要的信息,填入标号为16-20的空格中。听录音前,你将有10秒钟的阅题时间。录音读两遍。你将有80秒的作答时间。
|
The sea |
The sea
covers 16 of the earth. |
|
The work of mapping 17 |
is one of
the most interesting Projects in oceanography(海洋学) |
|
Long ago, there was only one way to measure the depth of the ocean. |
A seaman
pulled the rope up after it had 18 . |
|
In the 20th century |
19 was used to measure the ocean. |
|
The area near . the continents |
has the 20 in marine(矿物的) life . |