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Wind, water, air, ice and heat all work to cause erosion. As the wind blows over the land, it often (1)_____picks up__ small grains of sand. When these grains of sand strike against solid rocks, the rocks are slowly worn away. In this way, (2) ___even____ very hard rocks are worn away by the wind.
When particles of rocks or soil became loosened in any way, running water carries them down the (3) ___ hillsides____ Some rocks and soil particles are carried into streams and then into the sea.
Land that is covered with trees, grass and other plants wears away very slowly, and so loses very (4) ___ little____ of its soil. The roots of plants help to (5) ____ hold___ the rocks and soil in place. Water that falls on grasslands runs away more slowly than water that falls on bare ground. Thus, forests and grasslands (6) ___ help____ to slow down erosion.
Even where the land is (7) ___ thickly____ covered with plants, some erosion goes on. In the spring, the melting snow turns into a large quantity of water that then runs downhill in streams. As a stream carries away some of the soil, the stream bed gets deeper and deeper. (8) ____ After___ thousands of years of such erosion, wide valleys are often formed.
There's much more water(1)..........than........... land on the surface of the earth. The seas and oceans cover nearly four- fifths of the (2)...whole..... world , and only one-fifth of its land. If you traveled over the earth(3)....in........ different directions , you would have to spend (4)........much........... more of your time moving on water than(5)........on.......... roads or railways . We sometimes forget that for every mile of land there (6)........are....... four miles of water
There's so much water in the (7)......surface ...... of our earth that we have to use two words(8)..to.... describe. We use the (9).............word........ SEAS to describe those parts of water surface which only few hundreds of (10)...miles wide.... the word OSEANS to describe the huge area of water which are thousands of miles wide and very deep
Because their color is the same as the color around them.
(Vì màu sắc của chúng giống với màu sắc xung quanh chúng.)
Tạm dịch văn bản:
ĐỘNG VẬT BIỂN KỲ LẠ
Bạn có biết rằng một số loài động vật được ngụy trang? Nghĩa là màu của chúng giống với các màu xung quanh chúng. Một số động vật ngụy trang ẩn mình trong rong biển, đá và cát. Nhìn vào bức ảnh bên trái. Nó trông giống như rong biển, nhưng không phải! Đó là rồng biển lá. Nó ẩn mình trong rong biển. Nó cùng màu với rong biển. Giống như rong biển, thân của nó cũng có dạng như một chiếc lá. Nhìn vào bức ảnh dưới đây. Đây là một con cá đá. Nó ẩn mình trên cát, gần đá. Nó trông giống như một tảng đá. Mắt và miệng của nó ở đâu?
Dear Kay,
Insabella and I are having the (1.good)……………….holiday of our life!We are in Cinabliss Resort ,one of the (2 .lovely)………………………….inlands in the Eastern Sea.Although it is much (3.small )……………….than Vinaland,there seems to be (4.much)…………….to do than in Vinaland .Moreover,the people here seem to be (5.friendly)…………………….than those on other islands .We are staying in the (6.modern)………………… hotel i have ever seen .it is far(7.comfortable)………………………. than any other hotels and it is even (8.big) …………………….than the world famous Calton hotel.The (9.near)……………………beach is(10.little)…………….. than a hundred meter away,so we can go swim a lot .It’s really good ang I want you to be here with us .
Love,
Maltida
Điền các từ sau vào chỗ chấm thích hợp để hoàn thành đoạn văn :from ,means,in,waste ,possible ,wind,should,green.However,who .
Much of our waste ,especailly waste(1)…………………………..factories,eletric-powered stations ,the chemical industry and heavy industry ,is very dangerous .Fish die (2) …………………………..the lakes,riversand seas;forest tree die,too .Much of this dangerous(3) …………………………..goes into the air and is carried by the(4) …………………………..for great distances .
The Earthis our home.We (5) …………………………..take care of it,for ourselves,and for our children and grandchildren .This (6) …………………………..we have to keep our environment (7) …………………………..and clean.The importantof this taskis pointed out by ecologists-the scientist(8) …………………………..study the relations between living things and the environment .(9) …………………………..,each of us must do everything (10) …………………………..to keep the land ,air and water clean.
Do you know that some animals are camouflaged? This means their color is the same as the colors around them. Some camouflaged animals hide in seaweed, rocks, and sand. Look at the photo on the left. This looks like seaweed, but it’s not! It’s the leafy seadragon. It hides in the seaweed. It's the same color as seaweed. Like the seaweed, its body is also in the shape of a leaf. Look at the photo below. This is a stonefish. It hides on the sand, near rocks. It looks like a rock. Where are its eyes and its mouth?
The animals hide in:
- seaweed (rong biển)
- rocks (đá)
- sand (cát)
(1): pick up
(2): even
(3): thickly
(4): little
(5): hold
(6):help
(7): hillsides
1. pick up
2. even
3.thickly
4. little
5. hold
6. help
7. hillsides
8. after