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5. The population of the town can be divided into three main ______________.
A. gangs B. tribes C. lists D. groups
6. ____________refers to the existence of different plants and animals in a place.
A. Resources B. Existence C. Biodiversity D. Marine
7. The turtle has a long life _________________.
A. age B. span C. expectancy D. Both B and C
8. The case is still under ___________________
A. investigate B. investigated C. investigator D. investigation
9. The whale is a(n) _______________species.
A. endanger B. dangerous C. endangered D. endangering
10. Strong _________________are dangerous for swimmers.
A. seas B. rivers C. climates D. currents
11. It is important to ________________a reasonable level of fitness.
A. control B. maintain C. keep D. B and C
12. We would stay at home __________________.
A. if it were snowing C. if it is going to snow
B. if it would snow D. if it will snow.
13. I am sure that Nam would go to the cinema with you ____________.
A. if you ask him C. if you asked him
B. if you will ask him D. if you would ask him
14. I will never talk to you again _____________you apologize me___________ your being so rude.
A. if / for B. unless / for C. or / of D. whether / of
15. The whale feeds by opening its mouth wide, waiting for masses of shrimps-like animals called
_____________.
A. crabs B. shrimps C. starfish D. krill
1. If we continue to use fuels at the current rate, we would soon have to face a fuel crisis => will
2. If I am 10 centimeters taller, I would play basketball => were
3. If the doctors could find in the remedy, a lot of people would be saved => out
4. If she bought that house now, she ran out of money => would run
5. What you would do if you could speak French well? =>would you do
6. If tomorrow the weather will be bad, the match will be postponed => is
7. If you will see Mike today, please ask him to phone me => \(\varnothing\)
8. If I were you, I will go to the dentist's and have the tooth checked => would
9. If you hadn't left the car unlooked, it would't have be stolen =>been
10. What would happen because I pressed that red button => if
11. If the weather is fine today, we would go to the beach => will
12. If you will study harder, you will surely pass the coming exams with good results => \(\varnothing\)
13. If the weather weren't too bad, we would to go swimming => \(\varnothing\)
14. If we will reduce the speed of population growth, there will be less pressure on the earth => \(\varnothing\)
15. Unless we leave a bowl of water under the sun, it will evaporate => if
Find mistakes and fix it:
1. Unless we leave a bowl of water under the sun, it will evaporate.
=> If
2. If you continue to use fuels at the current rate, we would soon have to face a fuel crisis.
=> will
3. If I had known that the road were flooded, I would never have taken that away.
=> were flood
III. Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.
1. He is a _______ biologist . He spends all his life studying sea plants and animals.
A. ocean B. marine C. botany D. sea
2. Sperm whale populations are at risk due to hunting.
A. in danger B. in fewness C. in extinction D .on the decreased
3. _______ is a chemical used for killing weeds.
A. Pesticide B. Herbicide C. Fertilizer D. Antibiotic
4. Some whales migrate into warm waters to bear their _______ .
A. youngs B. diets C. calves D. young whales
5. _______ is the variety of different types of plant and animal life in a particular region.
A. Herbicide B. Interaction C. Environment D. Biodiversity
6. Whales like to feed in the cold oceans where there is a lot of krill.
A. sea plants B. small fish C. tiny shellfish D. small animals
7. Some tiny organisms are _______ along by the currents.
A. carried B. taken C. flowed D. moved
8. These birds ______ to North Africa in winter.
A. settle B. go C. relocate D. migrate
9. Sperm whales are ______, which means they eat meat.
A. herbivores B. carnivores C. omnivores D. mammals
10. Linda has a bad cold. She ____________ out in such bad weather .
A. shouldn’t go B. should take C. should go D. shouldn’t take
11. I think he ______ home tonight because his mother was sick.
A. should ride to B. should stay C. shouldn’t stay D. shouldn’t go out
12. He always has difficulty getting up early. – He ______ up late .
A. should stay B. shouldn’t go C. should go D. shouldn’t stay
13. You _______ Mark . You know it’s a secret.
A. should tell B. shouldn’t tell C. couldn’t tell D. might tell
14. I think this job is suitable for you. You ______ for this job .
A. shouldn’t apply B. should apply C. should look D. shouldn’t look
15. Mr. Nam has a bad cough. He ______ smoking .
A. shouldn’t stop B. should continue D. should give up D. shouldn’t give up
16. Her salary is very low. She _______ another job .
A. should look after B. should look at C. should look in D. should look for
17. If I_______ his phone number, I would call him.
A. know B. knows C. knew D. known
18. If we don’t maintain this biodiversity, the undersea populations would be_______ stake.
A. on B. at C. with D. from
19. The sea bed _______ here to 5000 meters.
A. deep B. deepens C. deeper D. depth
20. She gave me a_______ look and said nothing.
A. mysteriously B. mystery C. mysteries D. mysterious
21. Mark the letter A, B, C, or D to indicate the word(s) CLOSEST in meaning to the underlined word.
Harmful insects must be eliminated to protect our crops.
A. got rid of B. protected C. raised D. cultivated
22. Mark the letter A, B, C, or D to indicate the word(s) OPPOSITE in meaning to the underlined word.
Keep only fish that you will eat; release the rest.
A. have B. hold C. take D. catch
I choose the best answer
1. some whales migrate into warm waters to bear their ........
a. young b. diests c. calves d. young whales
2. whales feed on krill
a. tiny shellfish b. small fish c. sea plants d. small animals
3. ........ is the variety of different types of plant and animal life in a particular region
a. interaction b. herbicide c. environment d. biodiversity
4. he is a ........biologist. he spends all his life studying sea plants and animals
a. ocean b. marine c. botany d. sea
5. ........ is a chemical used for killing-weeds
a. pesticide b. herbicide c. fertilizer d. antibiotic
6. we all enjoyed the waters of timor sea and the coral reefs that lie ........
a. under b. behind c. beneath d. beside
7. some tiny organism are ........ along by the currents
a. carried b. taken c. flowed d. moved
8. sperm whales are ........ , which means they eat meat
a. herbivores b. carnivores c. omnivores d. mammals
9. sperm whale populartion are at risk due to hunting
a. in extinction b. in danger c. on the decrease d. in fewness
10. these birds ........ to north africa in winter
a. settle b, go c. relocate d. migrate
Without plants, most water would run off
-> If there weren't any plants, most water would run off
Unless the biodiversity of the sea were maintained, marine life would be at stake
-> If the biodiversity of the sea weren't maintained, marine life would be at stake
Without plants, most water would run off
-> If there aren't any plants, most water would run off