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Electric cars are getting cheaper and their sales are on the rise, but their future success may depend on ditching a key【C1】____
Electric cars are getting cheaper and their sales are on the rise, but their future success may depend on ditching a key【C1】____
admin
2021-10-14
47
问题
Electric cars are getting cheaper and their sales are on the rise, but their future success may depend on ditching a key【C1】________: the heavy metal cobalt.
The mineral is used in the lithium-ion batteries that【C2】________most electric cars, and demand for it is【C3】________increasing. A new analysis by Elsa Olivetti at the Massachusetts Institute of Technology and her colleagues has found that there may be cobalt shortages【C4】________ we don’t start refining and recycling it more efficiently or in greater quantities.
The new analysis suggests short-term cobalt supply is【C5】________,【C6】________that more mining exploration,【C7】________in the ocean, is required.【C8】________we will need to【C9】________cobalt recycling by recovering it from batteries in【C10】________electric cars, laptops and mobile phones.
Another【C11】________is to shift to【C12】________that use less cobalt, or none at all. Elon Musk’s car firm Tesla is in【C13】________with battery manufacturer CATL to use entirely cobalt-free batteries in its China-made cars,【C14】________a report last week by Reuters.
Lithium-ion batteries in electric cars commonly use【C15】________lithium nickel cobalt aluminium oxide【C16】________lithium nickel manganese cobalt oxide for their ability to【C17】________a long lifespan and【C18】________energy density—a key factor in how【C19】________an electric car can go【C20】________a single charge.
【C19】
选项
A、away
B、far
C、long
D、distant
答案
B
解析
固定搭配题。四个选项分别为[A]away“离去,离开”;[B]far“远的,(距离)远至”;[C]long“长的”;[D]distant“遥远的”。根据原文“这是电动汽车可以行驶多________的关键因素”可猜测,空格处所填词应有“多远”之意,只有[B]选项符合题意,故答案为[B]选项。
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0
考研英语二
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