AThe problem of extracting methane hydrates is retrieving methane gas and bringing it to the surface.
BIt is very easy to find methane hydrates.
COnly Japan wants to extract methane hydrates.
DMethane hydrates are a major source of fuel in Japan.
AIt contradicted with the conservation law.
BThere were not enough enforcement personnel.
CIt was difficult to identify illegal ivory.
DFederal agents were not professional.
AIt is located to the north of Brazil.
BIt is located in the south of Portugal.
CIt is an ocean island.
DIts busiest season is from December to March.
AThe death toll of the respiratory diseases infected people has increased.
BMore women died because of the respiratory diseases.
CThe death because of the respiratory diseases in UK is more than other country.
DMore people get respiratory diseases in UK than any other country.
ATry to be connected to the two-way service.
BSearch on the home page of the company and call them.
CProvide the job-hunting and talent-hunting services.
DCall the company to see if they need staff.
ATheir countries will respectively face challenges in the future.
BBoth sides should strengthen unity and support.
CIt is necessary to strengthen economic and political cooperation between the two sides.
DAll of the above.
AThe company directly manages the retailers.
BThe company is trying to directly manage the retailers so that there will be no middlemen.
CThe company is now establishing the channels of distribution.
DThe company is now to get rid of the middleman.
对
错
对
错
ANutrient-rich.
BNutrient-poor.
CDependent.
DInterdependent.
ANutrient-rich.
BNutrient-poor.
CDependent.
DInterdependent.
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