2. 外语
  3. Language acquisition is one of the central topics in cognitive science. Every theory of cognition has tried to explain it. Poss

Language acquisition is one of the central topics in cognitive science. Every theory of cognition has tried to explain it. Poss

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问题     Language acquisition is one of the central topics in cognitive science.
Every theory of cognition has tried to explain it. Possessing a language is the
quintessentially human trait: all common humans speak, no nonhuman ani-【M1】______
mal does. Language is main vehicle by which we know about other people’s【M2】______
thoughts, and the two must be intimately related. Every time we speak we
are revealing something about language, because the facts of language【M3】______
structure are easy to come by: these data hints at a system of extraordinary【M4】______
complexity. Nonetheless, learning a first language is something every child
does successfully, as a matter of a few years and without the need for formal【M5】______
lessons. With language so close to the core of what it means to be human, it is
not surprising that children’s acquisition of language has received so much
attention.
    A relating question is whether language is unique to humans. At first【M6】______
glance the answer seems obvious. Other all animals communicate with a fixed【M7】______
repertoire of symbols, or with analogue variation like the mercury in a thermometer.
But nothing appears to have the combinatorial rule system of【M8】______
human language, in which symbols are changed into an unlimited set of combinations,
each with a determinate meaning. On the other hand, many other
claims about human uniqueness, such like that humans were the only animals【M9】______
to use tools or to fabricate them, have turned into to be false.【M10】______
【M3】
选项
答案because--so
解析 连词错误。根据前后文的句意，该处表示的逻辑关系是“所以”而非“因为”，故将because改为so。
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