The chemical factories produced _____ that threatened the local people’s health. A machines B materials C metals D pollutants
D pollutants
A typical B organic C reliant D dependent
A typical
A consistent B consuming C depleted D minimal
D minimal
______ items are originally thought to be useful, but they turn out to be an environmental problem. A Dispose B Disposable C Disposing D Disposal
B Disposable
A viable B impactful C permanent D usable
B. impactful
A sustainable B predictable C affordable D beneficial
D beneficial
If I _____ that plastic was bad for the environment, I would have used reusable bags for shopping. A had known B knew C will know D know
A had known
A investment B energy C depletion D benefit
C. depletion
We can____the power of the wind to generate electricity. A save B harness C manage D conserve
B. harness
A pollute B reduce C commute D excuse
A. pollute
A locate B install C value D exist
C. value
(22)_____ fuel-powered cars had never been invented, this is what we would be driving! A. If B. Unless C. When D. While
A. If
16 Some types of green energy sources are very difficult to be in some nations. A harnessed B impacted C reduced D contributed
A harnessed
If you could charge your car with the sunlight, (20) ______ you? A. will B. can’t C. won’t D. would
D. would
A mode B town C home D growth
B. town
The Sun Travel’s revolutionary solar panels (21)____the solar power, providing you with unlimited energy. A. produce B. maintain C. harness D. promote
C. harness
1_____energy were difficult to harness, we would be able to produce lots of clean energy. A If B As long as C Unless D On condition that
C. Unless
Did you know that using LED lightbulbs instead of conventional ones could (23) _______ reduce your electricity bill? A. negatively B. significantly C. impossibly D. ineffectively
B. significantly
(20) _____ vehicles severely cause air pollution. A Energy-saving B Fuel-efficient C Fossil-powered D Eco-friendly
C Fossil-powered
19 If I were you, I ______ down on my daily use of fossil fuels from now on. A will cut B would cut C would have cut D could have cut
B. would cut
If we (21) ___to eco-friendly options like electric vehicles, bicycles or public transport, our city will have cleaner air and a brighter future. A switch B switched C had switched D would switch
A switch
(22)_____make a change together for a healthier, more sustainable city. A Why don’t B How about C Shall we D Let’s
D. Let’s
If tidal power ___ energy continuously, it wouldn’t be regarded as a sustainable energy source. A doesn’t produce B hasn’t produced C didn’t produce D hadn’t produced
C. didn’t produce
Unless we _____ a suitable location for wind energy, we won’t be able to build wind turbines. A find B don’t find C found D didn’t find
A. find
Renewable energy sources can’t be ______in the natural world. A polluted B depleted C predictable D impactful
B. depleted