Choose the best answer A, B, C or D to complete the sentences.It is stated that we are now in the first stages of a battle for the _______ of life on the Earth.
A.purification
B.sustainability
C.conservation
D.responsibility

Choose the best answer A, B, C or D to complete the sentences.In Mexico and Central America, more than 65% of the natural ______ of the jaguar has been destroyed, mainly due to farming and deforestation.
A.area
B.habitat
C.ground
D.soil

Choose the best answer A, B, C or D to complete the sentences.Nuclear power plants produce a lot of dangerous waste that they continually need to _______.
A.dispose
B.dispose of
C.replace
D.get rid

Choose the best answer A, B, C or D to complete the sentences.You should ________ your car with petrol before starting on a journey.
A.deal
B.supply
C.replenish
D.offer

Choose the best answer A, B, C or D to complete the sentences.The continued ______ of our ozone may cause terrible destruction to our planet.
A.redundancy
B.removal
C.change
D.depletion

Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage.
Simple ways you can help to make a difference
During high school, it’s easy to become stressed in balancing a number of (22)______. But between all the stress and pressure of keeping up with your various activities, it’s important to contribute to the community, and make (23)________ to protect the environment. So here are a few tips on ways you and other teens can “go green.”
One of the easiest ways teens can go green is simply to turn off the lights. Open up the curtains and (24)______the natural sunlight brighten up the room, or turn off the lights and fans when you leave a room that no one else is in. Studies have indicated that (25)_______ electricity helps to reduce global warming.
Another way to go green is to use your bike, or walk. Using your bike or waling reduces carbon (26)_______, and it is a great way to exercise. Therefore, by riding a bike or walking, not only are you helping the environment, you are (27)_____ contributing to your own health.
You could also try (28)_______ a reusable water bottle. Buying a reusable bottle is a smart investment because not only plastic water bottles often go un-recycled, but buying a reusable water bottle can actually save you money over buying plastic bottles over and over again as well.
Another great idea is to (29)________ your computer and all other electronics before you go to bed, or after you are done using them. Although you may no longer be using your computer, it stills uses electricity in small amounts that add up.
Finally, you can go green by turning off the faucet. Many people leave the faucet (30)________ while they brush their teeth, but this is just wasting water. Turning the faucet off (31)_________you brush your teeth can save the world o lot of water.
A.forces
B.prohibition
C.regulations
D.obligation

Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage.
Simple ways you can help to make a difference
During high school, it’s easy to become stressed in balancing a number of (22)______. But between all the stress and pressure of keeping up with your various activities, it’s important to contribute to the community, and make (23)________ to protect the environment. So here are a few tips on ways you and other teens can “go green.”
One of the easiest ways teens can go green is simply to turn off the lights. Open up the curtains and (24)______the natural sunlight brighten up the room, or turn off the lights and fans when you leave a room that no one else is in. Studies have indicated that (25)_______ electricity helps to reduce global warming.
Another way to go green is to use your bike, or walk. Using your bike or waling reduces carbon (26)_______, and it is a great way to exercise. Therefore, by riding a bike or walking, not only are you helping the environment, you are (27)_____ contributing to your own health.
You could also try (28)_______ a reusable water bottle. Buying a reusable bottle is a smart investment because not only plastic water bottles often go un-recycled, but buying a reusable water bottle can actually save you money over buying plastic bottles over and over again as well.
Another great idea is to (29)________ your computer and all other electronics before you go to bed, or after you are done using them. Although you may no longer be using your computer, it stills uses electricity in small amounts that add up.
Finally, you can go green by turning off the faucet. Many people leave the faucet (30)________ while they brush their teeth, but this is just wasting water. Turning the faucet off (31)_________you brush your teeth can save the world o lot of water.
A.achievements
B.effort
C.contribution
D.dedication

Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage.
Simple ways you can help to make a difference
During high school, it’s easy to become stressed in balancing a number of (22)______. But between all the stress and pressure of keeping up with your various activities, it’s important to contribute to the community, and make (23)________ to protect the environment. So here are a few tips on ways you and other teens can “go green.”
One of the easiest ways teens can go green is simply to turn off the lights. Open up the curtains and (24)______the natural sunlight brighten up the room, or turn off the lights and fans when you leave a room that no one else is in. Studies have indicated that (25)_______ electricity helps to reduce global warming.
Another way to go green is to use your bike, or walk. Using your bike or waling reduces carbon (26)_______, and it is a great way to exercise. Therefore, by riding a bike or walking, not only are you helping the environment, you are (27)_____ contributing to your own health.
You could also try (28)_______ a reusable water bottle. Buying a reusable bottle is a smart investment because not only plastic water bottles often go un-recycled, but buying a reusable water bottle can actually save you money over buying plastic bottles over and over again as well.
Another great idea is to (29)________ your computer and all other electronics before you go to bed, or after you are done using them. Although you may no longer be using your computer, it stills uses electricity in small amounts that add up.
Finally, you can go green by turning off the faucet. Many people leave the faucet (30)________ while they brush their teeth, but this is just wasting water. Turning the faucet off (31)_________you brush your teeth can save the world o lot of water.
A.let
B.allow
C.help
D.try

Choose the word which has a different stress pattern from the others.
A.respiratory
B.initiative
C.eco-friendly
D.renewable

Choose the best answer A, B, C or D to complete the sentences.Water____ is essential during the summer months.
A.depletion
B.conservation
C.purification
D.pathway