Giáo án tiếng Anh lớp 12 - Unit 10

r by toxic chemicals; unnatural climate changes due to fossil fuel use; unmanaged fishing that exhausts fish stocks; and illegal hunting to supply the demand for skins, hides, traditional medicines, food, and tourist souvenirs. The list which conservationists presents only a fraction of the species at risk of extinction today and does not include thousands of species whose status we do not yet know. Hundreds of species without common names have been left out, which means that while many mammals are on this list, only a few insects and mollusks are included. 
Species listed here range from the largest animal on Earth, the blue whale, to the majestic tiger, to the humble thick-shell pond snail. Large or small, beautiful or ugly, all species play a role in the complex circle of life. All of us depend on the natural resources of our planet. Each time a species is lost, the complexity, natural balance, and beauty of our world is diminished. And what threatens plants and animals ultimately threatens people as well.
According to the first paragraph _______.
a. species extinction is only caused by hunting b. human beings protect wife life much more than they do harm to them
c. the main cause of species extinction is human activities d. we can stop radically species extinction by 2025
The North American bison _______.
a. was completely extinct in 1800s	b. was not the aim of human hunting
c. was raised by settlers in 1800s	d. has escaped from extinction thanks to conservationists
Species are categorized _______.
a. to prevent hunting 	b. to provide food
c. to destroy their habitats 	d. to give preferential right to conserve
Which sentence is true?
a. Medicine is not a factor to cause species extinction.
b. The list which conservationists present does not include all kinds of species.
c. Pollution does nothing to species extinction. 
d. Conservationists have good knowledge of all kinds of mollusks.
According to the last paragraph, _______.
a. species extinction has no relationship to human beings
b. what threaten plants and animals can do nothing to human beings
c. human beings depend on natural resources to survive 	
d. not every, species has a role in the circle of life.
Fill in each numbered blank with one suitable word or phrase.
Nearly 200 of the 1500 native plant species in Hawaii are at risk of going extinct in the near future because they have been (41) _____ to such low numbers. Approximately 90 percent of Hawaii's plants are found nowhere else in the world but they are (42) _____ by alien invasive species such as feral goats, pigs, rodents and non- (43) _____ plants.
The Hawaii Rare Plant Restoration Group is striving to (44) _____ the extinction of the 182 rare Hawaiian plants with fewer than 50 individuals remaining in the (45) _____. Since 1990, (46) _____ a result of their 'Plant Extinction Prevention Program', sixteen species have been brought into (47) _____ and three species have been reintroduced. Invasive weeds have been removed in key areas and fencing put up in order to (48) _ plants in the wild.
In the future the Hawaii Rare Plant Restoration Program aims (49) _____ collecting genetic material from the remaining plants in the wild for storage as a safety net for the future. They also aim to manage wild populations and where possible reintroduce species into (50) _____
a. disappeared 	b. reduced 	c. increased 	d. developed
a. guarded 	b. invested 	c. conserved 	 	d. threatened
a. nation 	b. native 	c. national 	d. nationally
a. prevent 	b. encourage 	c. stimulate 	d. influence
a. wild 	b. atmosphere 	c. hole 	d. sky
a. so 	b. due 	c. as 	d. but
a. contamination 	b. production 	c. cultivation 	d. generation
a. derive 	b. vary 	c. remain 	d. protect
a. at 	b. for 	c. with 	d. on
a. shelters 	b. reserves 	c. gardens 	d. halls
ENGLISH 12 UNIT 10 _ TEST 2
Choose the word which has the underlined part pronounced differently from the rest.
a. endangered 	b. destroyed 	c. damaged 	d. provided
a. attitude 	b. survive 	c. introduce 	d. human
a. medicine 	b. priority 	c. crisis 	d. primary
a. chemical 	b. which 	c. change 	d. each 
a. protect 	b. commercial 	c. construction 	d. climate
Almost half of turtles and tortoises are known to be threatened with ____.
a. extinct 	b. extinction 	c. extinctive 	d. extinctly
Current extinction rates are at least 100 to 1,000 times higher than _______ rates found in the fossil record.
a. nature 	b. natural 	c. naturally 	 d. naturalness
It is reported that humans are the main reason for most species' declines and habitat __ and degradation are the leading threats.
a. destroy 	b. destructive 	c. destructor 	 d. destruction
We have to apply effective measures to save many plant and animal species _______ extinction.
a. from 	b. in	 c. for 	d. on
Over-exploitation for food, pets, and medicine, pollution, and disease are recognized __ a serious threat ___ extinction.
a. as / of 	b. to / for 	c. over / with 	d. upon / at
Clearing forests for timber has resulted _______ the loss of biodiversity.
a. with 	b. at 	c. in 	d. for
Humans depend on species diversity to provide food, clean air and water, and fertile soil for agriculture.
a. destruction 	b. contamination 	c. fertilizer 	d. variety
The world's biodiversity is declining at an unprecedented rate, which makes wildlife _______.
a. prosperous 	b. prefect 	c. vulnerable 	d. remained
Life on Earth is disappearing fast and will continue to do so unless urgent action is taken.
a. vanishing 	b. damaging 	c. polluting 	d. destroying
_______ is the protection of environment and natural resources.
a. Survival 	b. Commerce 	c. Conservation 	d. Extinction
Hunting for meat and burning forests for soil cause destruction to wildlife.
a. organization 	b. contamination 	c. protection 	d. damage
Toxic chemicals from factories are one of the serious factors that leads wildlife to the _______ of extinction.
a. wall 	b. fence 	c. verge 	d. bridge
Species become extinct or endangered for _____ number of reasons, but _____ primary cause is the destruction of habitat by human activities.
a. Ø / a 	b. a / the 	c. the / a 	d. Ø / Ø
Since _______ 1600s, worldwide overexploitation of animals for _______ food and other products has caused numerous species to become extinct or endangered.
a. the / a 	b. the / Ø 	c. Ø / the 	d. the / the
I _______ be at the meeting by 10:00. I will probably _______ take a taxi if I want to be on time.
a. must/ have to b. may / must c. should / needn't d. mustn't / shouldn't
You _______ forget to pay the rent tomorrow. The landlord is very strict about paying on time.
a. needn't 	b. mustn't 	c. do not have to 	d. may not
The television isn't working. It _______ during the move.
a. should have been damaged 	b. needn't be damaged c. must have been damaged 	d. ought not be damaged
I am not deaf. You _______ shout.
a. must 	b. mustn't 	c. need 	d. needn’t
John failed again. He _______ harder.
a. must have tried 	b. should have tried c. can tried d. may have tried
_______ I borrow your lighter for a minute? - Sure, no problem. Actually, you _______ keep it if you want to.
a. May / can 	 b. Must / might 	c. Will / should 	d. Might / needn’t
I do not mind at all. You _______ apologize.
a. shouldn't 	b. needn't 	c. mustn't 	d. oughtn't to
Ted's flight from Amsterdam took more than 11 hours. He _______ exhausted after such a long flight now. 
a. must be b. must be being c. must have been d. should have been
The lamp _______ be broken. Maybe the light bulb just burned out.
a. should not 	b. might not 	c. must not 	d. will not
It is a top secret. You _______ tell anyone about it.
a. mustn't 	b. needn't 	c. mightn't 	d. won't
We have plenty of time for doing the work. We _______ be hurried.
a. needn't 	b. shouldn't 	c. mustn't 	d. mayn't
Choose the best sentence that can be made from the words given.
Read the passage carefully and choose the correct answer.
We live in a dynamic world, and habitats are always undergoing changes at all sorts of levels. However, natural changes usually occur at a slow pace so that impacts on individual species tend to be slight - at least in the short term. When the pace of change is greatly accelerated, there may be no time for individual species to react to new circumstances, and the effects can be disastrous. Briefly, this is the reason that rapid habitat loss is regarded as the chief cause of species endangerment, and there is no force more powerful in this regard than human beings. To some extent, every part of the earth has been affected by human activities, especially during this past century. This applies on virtually every scale, from the loss of microbes in soils that once supported tropical forests, to the extinction of fish and other aquatic species in polluted freshwater habitats, to changes in global climate caused by the release of greenhouse gases.
From the perspective of an individual human lifetime, such changes may be hard to detect and their effects on individual species may be hard to predict. But the lesson is clear enough. For example, although many countries have had plans to grow many tropical forests, they are highly susceptible to destruction because the soils in which they grow are poor in available nutrients. Centuries may be required to bring back a forest that was cut down or burnt out in the space of a few years. Many of the world's severely threatened animals and plants live in such forests, and it is certain that huge numbers of them will disappear if present rates of forest loss continue.
Habitats in the world are unchangeable and fixedly exist. a. True 	b. False 	c. No information
All species can adapt themselves to new circumstances easily and quickly.
a. True 	b. False 	c. No information
Human beings are the main cause that leads to rapid habitat loss. a. True 	b. False 	c. No information
Many kinds of fish are also in danger of extinction because water habitats are po