we should ... after coral reefs
Corals are living organisms that provide a natural ecosystem in the ocean called a coral reef. Fish hide in the coral reefs and consume plants that are harmful to the coral. Coral reefs can be affected by overfishing. Explain how the organisms work together in this ecosystem to meet their needs.
TK
Individual organisms live together in an ecosystem and depend on one another. … Some organisms can make their own food, and other organisms have to get their food by eating other organisms. An organism that must obtain their nutrients by eating (consuming) other organisms is called a consumer, or a heterotroph.
14b. Describe how overfishing could affect the coral reefs.
:V tham khảo
:Overfishing can alter food-web structure and cause cascading effects, such as reducing the numbers of grazing fish that keep corals clean of algal overgrowth. Blast fishing (i.e., using explosives to kill fish) can cause physical damage to corals as well.
. ................. problems in sailing in tropical seas is the coral reefs.
A. One of the biggest
B. The biggest one
C. Of the biggest one
D. There are the biggest
KEY A
Giải thích: one of the + Ns: một trong những...
Dịch: Một trong những vấn đề trong việc đi thuyền ngoài biển nhiệt đới là những rặng san hô.
IX. Match the sentences.
1. You shouldn’t stay up late. 2. What shall we do this afternoon? 3. This picture of coral reefs looks beautiful! 4. I will travel a lot this holiday. 5. This black hat is nicer than that white hat. 6. There’s a bus stop next to the supermarket. 7. Excuse me! Is there a post office near here? 8. How far is it from here? 9. You mustn’t tell anyone my secrets. 10. Can you tell me the way to the gas station? | a. Yes, there is one at the next corner. b. You’re right. It’s bad for my health. c. But where is the supermarket? d. Let’s go to the amusement park. e. Sorry, I can’t. I don’t know this area. f. About 300 metres. g. Sure! I promise. h. Really? Where will you go? i. But the white one is cheaper. j. Yes. It’s the biggest coral reefs in the world. |
X. Put the sentences in the correct order to make a conversation.
___ I must ask my parents first. I hope they will allow me to go with you.
___ I am going on a really great journey this year. Do you want to come with me?
___ I will read more books in my free time. How about you?
___ Wow! Joining a bike camp is one of my dreams! But do you think we can make it?
___ This new year will be full of fun and excitement!
___ I’m going to be in a bike camp. I will travel to the countryside.
1 What is your aim for new year?
___ Don’t worry! It won't be too tiring, and we can make new friends!
___ A great journey? Where will you go?
___ I believe they will. Let’s ask them now.
1b
2d
3j
4h
5i
6c
7a
8f
9g
10e
---------------
7 I must ask my parents first. I hope they will allow me to go with you.
3 I am going on a really great journey this year. Do you want to come with me?
2 I will read more books in my free time. How about you?
6 Wow! Joining a bike camp is one of my dreams! But do you think we can make it?
9 This new year will be full of fun and excitement!
5 I’m going to be in a bike camp. I will travel to the countryside.
1 What is your aim for new year?
7 Don’t worry! It won't be too tiring, and we can make new friends!
4 A great journey? Where will you go?
8 I believe they will. Let’s ask them now.
1b
2d
3j
4h
5i
6c
7a
8f
9g
10e
---------------
7 I must ask my parents first. I hope they will allow me to go with you.
3 I am going on a really great journey this year. Do you want to come with me?
2 I will read more books in my free time. How about you?
6 Wow! Joining a bike camp is one of my dreams! But do you think we can make it?
9 This new year will be full of fun and excitement!
5 I’m going to be in a bike camp. I will travel to the countryside.
1 What is your aim for new year?
7 Don’t worry! It won't be too tiring, and we can make new friends!
4 A great journey? Where will you go?
8 I believe they will. Let’s ask them now.
Choose the letter A, B, C or D to complete the sentences
___________ problems in sailing in tropical seas is the coral reefs.
A. One of the biggest
B. The biggest one
C. Of the biggest one
D. There are the biggest
Đáp án A
Giải thích: one of the + Ns: một trong những...
Dịch: Một trong những vấn đề trong việc đi thuyền ngoài biển nhiệt đới là những rặng san hô.
Chọn đáp án đúng:
Coral reefs are structures of hard rock (26) ... can be found in warm shallow sea water. They are formed by corals, small plant-like animals that live in large groups. Coral reefs are home to an amazing variety of plants and fish. Indeed, coral reefs are so rich in color and variety that they have been (27) ... the “tropical forests of the sea”. Sadly, just like rainforests, coral reefs are under threat from human activities. Climate change, overfishing and ocean pollution are causing damage to coral reefs all over the world. Already, scientists estimate that 10% of the world’s coral reefs no long exist and an incredible 60% are endangered. The problem (28) ... in the fact that coral reefs are very sensitive to
changes in water temperature. Climate change, which is expected to significantly raise water temperatures in the next few decades, could cause serious (29) ... to the world’s coral reefs. There are a (30) ... of things you can do to help protect coral reefs. They are among the most beautiful ecosystems in the world and it’s up to us to save them!
26.A. who B. that C. where D. whose
27.A. called B. described C. identified D. recognized
28.A. stays B. occurs C. lies D. deals
29.A. harm B. hurt C. injury D. wound
30.A. figure B. total C. amount D. number
Chọn từ trái nghĩa:
22.Everyone in my class admires Jane for her exceptional (intelligence).
A. awareness B. stupidity C. perception D. wisdom
23.I’m sorry. I didn’t mean to make too much noise in the room. I must have (forgotten my manners).
A. reminded my manners B. remembered what I said
C. talked too little D. behaved politely
The increased loss of the ecosystems (23) ________ wetlands, wildlife, rainforests, coral reefs, aquatic life forms, and grasslands are highly influenced by overpopulation. It is out of overpopulation that activities (24) ________as excessive agriculture, environmental pollution, and extensive land development have become more and more intensive. For example, rainforests originally covered 14% of the entire earth's surface. Today, rainforest only cover about 6% of the earth's surface and scientists' project it may even become (25) ___in the next four decades judged by the current rate of vegetation removal, logging, and deforestation. Besides, due to environmental pollution, 30% of the ocean reefs have been lost because of acidification and global warming (26) ___1980. Also, (27) ___half of the original wetlands have been lost.
23. A. include B. including C. includes D. included
24. A. like B.such C. so D. many
25. A. more B. most C. less D. lest
26. A. in B.for C. about D. since
27. A. more than B. more C. as D. so
The increased loss of the ecosystems (23) __ includes ______ wetlands, wildlife, rainforests, coral reefs, aquatic life forms, and grasslands are highly influenced by overpopulation. It is out of overpopulation that activities (24) __such ___as excessive agriculture, environmental pollution, and extensive land development have become more and more intensive. For example, rainforests originally covered 14% of the entire earth's surface. Today, rainforest only cover about 6% of the earth's surface and scientists' project it may even become (25) __less__in the next four decades judged by the current rate of vegetation removal, logging, and deforestation. Besides, due to environmental pollution, 30% of the ocean reefs have been lost because of acidification and global warming (26) _since__1980. Also, (27) _more than__half of the original wetlands have been lost.
23. A. include B. including C. includes D. included
24. A. like B.such C. so D. many
25. A. more B. most C. less D. lest
26. A. in B.for C. about D. since
27. A. more than B. more C. as D. so
Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
Coral reefs(A) are limestone formations(B) composed of tiny sea organisms(C) and the remains.(D)
A. Coral reefs
B. limestone formations
C. tiny sea organisms
D. the remains
Chọn D
“the remains” -> “their remains”. Nếu dùng là the remains thì trong câu không rõ nghĩa, “their remains” là chỉ “tiny sea organisms’ remains”
What should we do to protect our teeth? - We should c _ _ _ _ our teeth after meals