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On May 18, it was announced that China had achieved success
in drilling fire ice, a frozen {#blank#}1{#/blank#}(mix) of water and natural gas, from the
South China Sea. {#blank#}2{#/blank#}(official) known as methane hydrates(甲烷水合物), fire ice produces a high amount of
energy when {#blank#}3{#/blank#}(burn) and its chemical reaction
produces nothing but dioxide and water.
Fire ice, both clean and energy-intensive, {#blank#}4{#/blank#}(consider) the fuel of the future. Many
countries, including the United States and Japan, have long been conducting
research on fire ice, but extracting(提取)it from the bottom of the sea has been
a common problem {#blank#}5{#/blank#}(trouble) all of them. But, the Chinese
team succeeded in drilling fire ice for nearly eight successive days, {#blank#}6{#/blank#}is a big breakthrough.
However, it is too early {#blank#}7{#/blank#}(say) a new energy source has been
found. The world's total fire ice reserve is about 21,000 trillion cubic meters,
which, if extracted, could meet the world's energy need
{#blank#}8{#/blank#}1,000 years. But the successful test
drilling of fire ice does not mean it can be extracted for {#blank#}9{#/blank#}(industry) use. China has to solve many
problems before it can use fire ice as a source of energy.
It's thought that only by 2025 at{#blank#}10{#/blank#} earliest might people be able to look
at realistic commercial options.