英语听力答案 The sea is the largest (21)_________________.It cover

英语听力答案 The sea is the largest (21)_________________.It covers seventy-one
{属于Part C Spot Dictation }
The sea is the largest (21)_________________.It covers seventy-one
percent of the earth.There is (22)___________________about this vast
blanket of water.(23)_________,______________has the task of learning
all (24)___________________.The world sea surrounds the earth and (25)
______________________.Scientists in many different countries(26)________
_______.Some are studying ways of bringing (27)________________ to the
deserts of the world.Others (28)___________________by learning more about
(29)____________________between the ocean and the air,Others are studying
the ways in which (30)__________________by water and heat.