One possibility of supplying the world with clean, renewable energy is energy ha

游客2023-12-31  19

问题 One possibility of supplying the world with clean, renewable energy is energy harvesting from ocean waves, which has been proposed as a means of offsetting a large portion of the world’s electrical energy demand.

选项 A、canceling
B、exploring
C、satisfying
D、tackling

答案 C

解析    (1)句子结构。
   One possibility of supplying the world with clean,renewable energy(主句的主语)is(系动词)energy(主语补语)harvesting from ocean waves(补语的定语),which has been proposed as a means of offsetting a large portion of the world’s electrical energy demand(which引导的非限定性定语从句,修饰energy harvesting from ocean waves)。
   (2)选项词义。
   A.cancel v.取消,注销;抵消
   B.explore v.勘查,勘探;[医]探查(伤处等):研究
   C.satisfy v.符合,达到(要求、规定、标准等);履行
   D.tackle v.处理,解决;抢球;阻截
   句子大意为“为世界提供清洁、可再生能源的方法之一是海浪发电,人们认为它能够满足大部分电力能源需求”。题干中的offset意为“弥补”“补偿”,与选项中的satisfy词义最为接近,因此选项C正确;或者从satisfy demand这一常用搭配也可推断出C项为正确答案。
   【知识拓展】语法拓展:非限定性定语从句。
   非限定性定语从句起补充说明作用,它与主句往往用逗号隔开。非限定性定语从句的引导词通常是who,whom,whose和which等wh-词;关系代词which在非限制性定语从句中所指代和修饰的可以是主句中的名词、形容词、短语以及其他从句或整个主句,which在非限定性定语从句中可作主语、动词宾语、介词宾语或表语。
   关系代词which引导非限制性定语从句有四种情况:
   ①指代主句中的各类名词。
   e.g.These trees,which I planted three years ago,were cut by the enemy soldiers.
   这些树是我三年前栽的,现在被敌军砍了。
   ②指代主句中的形容词。
   e.g.She was very patient towards the children,which her husband seldom was.
   她对孩子们很耐心,她丈夫却很少这样。
   ③which指代主句中的某个从句。
   e.g.He said that he would love her forever, which was not true.
   他说他会爱她一辈子,这不是真的。
   ④which指代整个主句。
   e.g.He never has problems in his study, which is admired by his classmates.
   他学习上从来没出过问题,他的同学对此很是敬佩。
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