2. 考研
  3. 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】____

admin2021-10-14  55
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.
【C8】
选项 A、In a word
B、Except that
C、In addition
D、A11 in all
答案C
解析 固定搭配题。四个选项分别为[A]In a word“总之”；[B]Except that“除了……之外”；[C]In addition“此外，另外”；[D]All in all“总而言之”，根据原文“________，我们将需要去________”，说明空格处所填词应是对前文的进一步说明，结合四个选项，只有[C]选项符合题意，故答案为[C]选项。
转载请注明原文地址:https://kaotiyun.com/show/lCY4777K
0

考研英语二

相关试题推荐
随机试题
最新回复(0)