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1. 75% / the earth surface / cover / seas and oceans /.
……75 % of the earth surfect is covered by seas and oceans…………………………………………………………………………………………………………………………
2. We / used / think that there / no life / the ocean depths /.
………We used to think that there was no life under the ocean depths………………………………………………………………………………………………………………………
3. All the plants / animals / the ocean / contribute / the biodiversity / the ocean /.
………All the plants and animals under the ocean contribute to the biodiversity of the ocean………………………………………………………………………………………………………………………
4. Scientists / send submarines / devices / investigate / ocean depths /.
……Scientists send submarines and devices to investigate the ocean depths…………………………………………………………………………………………………………………………
5. They investigate / seabed / bring samples / marine life / to the surface / further study /.
………They the seabed and bring samples of marine life back to the surface for further study. ………………………………………………………………………………………………………………………
Identify the one underlined word or phrase - A,B,C or D - that must be changed for the sentence to be correct :
6. Jack will win the election if he campaigned harder.
campaigned => campaign
7. We're used to think that there was no life in the oceandepths.
're used to => used to
8. A large portion of the world's water supply have beencontaminated by factory waste, ships and oil spills.
world's => world
9. Were Mr. Morgan still head teacher, he would not permit such bad behave.
behavior
10. You can't go into the reception if you've got a ticket.
If => unless
A,B,C,D tương ứng với mỗi từ mình gạch chân từ trái sang phải nhé. 
Scientists would like to place a giant mirror in space above the earth. It might be sixty mile....away.... It would be use to......focus......the rays of the sun. It would .......focus.......the sun's rays upon the earth as you might ......used....... with a magnifying glass. why do they want to do this ? The sun's rays could be used in.....different....ưays. They could ......burn......up cities by night. The warm rays could frost that might come night and ...damage.....fruit crops. The rays could ......melt.....dangerous iceberges in the ocean. Perhaps they could change cloud and bring rain where it is needed
Plans grow(46)in almost every part of the world. We see(47)such plants as flowers, glass, and tree nearly every day. Plants grow high on moutaintops, far in the oceans, and in many deserts and(48)polar regions
Without plants, there could be not life on earth. Man could not live without air of food and so he could not live without plants. The oxygen in the air we breathe comes from plants. The food we eat also comes from plants or from animals that eat plants. We build houses and make many(49)useful products from lumber cut from trees. (50) Much of our clothing is made from the fitbers of the cotton plants.
Scientists belive there are more than 350,000 species of plants, but no one knowns for(51)sure. Some of the smallest plants, called diatoms, can be seen only with a(52)microscope . A drop of the water may hould as many as 500 diatoms. The largest living things are the giant sequoia trees of California. Some of them stand more than 290 feet high and measure over 30 feet wide
Scientist(53)divide all living things into two main groups - plants and animals. It is usually easy to tell the two(54)apart . Almost all kinds of plants stay in one place, but nearly all species of animals move about under their own power. Most plants make their own food from air, sunglight, and water. Animals cannot make their own food. The basic units of all life, called cells, are also different in plants and animals. Most plants have thick wall that(55) contain a material called cellulost. Animal cells dl not have this material.
1. They are slower and more careful writers than us.
=> They write more slowly and carefully than us.
2. Other oceans in the world aren't as large as the Pacific one.
=> The Pacific Ocean is the largest ocean in the world.
3. The Eiffel Tower is as high as an 81-storey building. (same)
=> The Eiffel Tower has the same height as an 81-storey building.
Hỏi 2 acc luôn hả ??
1. 75% / the earth surface / cover / seas and oceans /.
……75 % of the earth surfect is covered by seas and oceans…………………………………………………………………………………………………………………………
2. We / used / think that there / no life / the ocean depths /.
………We used to think that there was no life under the ocean depths………………………………………………………………………………………………………………………
3. All the plants / animals / the ocean / contribute / the biodiversity / the ocean /.
………All the plants and animals under the ocean contribute to the biodiversity of the ocean………………………………………………………………………………………………………………………
4. Scientists / send submarines / devices / investigate / ocean depths /.
……Scientists send submarines and devices to investigate the ocean depths…………………………………………………………………………………………………………………………
5. They investigate / seabed / bring samples / marine life / to the surface / further study /.
………They the seabed and bring samples of marine life back to the surface for further study. ………………………………………………………………………………………………………………………
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