He has for three or four days.
A. got a headache B. fallen ill C. caught a cold D. had a cough
每日10分鐘口算心算速算天天練系列答案
| 年級 | 高中課程 | 年級 | 初中課程 |
| 高一 | 高一免費(fèi)課程推薦！ | 初一 | 初一免費(fèi)課程推薦！ |
| 高二 | 高二免費(fèi)課程推薦！ | 初二 | 初二免費(fèi)課程推薦！ |
| 高三 | 高三免費(fèi)課程推薦！ | 初三 | 初三免費(fèi)課程推薦！ |
科目：初中英語 來源： 題型：050
If a man in a spaceship looked down at the earth, he would see mainly water. He might think that the earth was one giant ocean with little land.
Nearly seven-tenths of the earth's surface is covered by water. One ocean, the Pacific (
太平洋), has an area of 63 million square miles.Many years ago people thought that the land under all this water was flat. Now they know that this is not true. There are as many mountains under the sea as there are on the land.
At first, there was very little salt in the sea. The salt was brought into the, sea by rivers. It is possible to measure the age of the earth by measuring the amount of salt in the sea. Scientists can calculate how many years it took for this amount of salt to be carried from the land into the sea.
(1)Nearly ____of the earth's surface is covered by water.
[ ]
|
A ．seven-tenths |
B ．three-tenths |
|
C ．seven-tenth |
D ．three-tenth |
(2)Long time ago people thought that the land under the sea was_____
．[ ]
|
A ．mountains |
B ．a ball fo gas |
|
C ．full of coal |
D ．flat |
(3)In fact, under the sea the land _________
．[ ]
|
A ．is full of mountains |
B ．is almost flat |
|
C ．is full of coal |
D ．is a ball of gas |
(4)At first, there was ________
．[ ]
|
A ．a little salt in the sea |
B ．much salt in the sea |
|
C ．little salt in the sea |
D ．no salt in the sea |
(5)We can know the age of the earth by measuring ________
．[ ]
A
．the amount of water in the seaB
．the amount of flat in the seaC
．the amountofmountainsintheseaD
．the amount of salt in the sea查看答案和解析>>
湖北省互聯(lián)網(wǎng)違法和不良信息舉報平臺 | 網(wǎng)上有害信息舉報專區(qū) | 電信詐騙舉報專區(qū) | 涉歷史虛無主義有害信息舉報專區(qū) | 涉企侵權(quán)舉報專區(qū)
違法和不良信息舉報電話：027-86699610 舉報郵箱：58377363@163.com