2. 外语
  3. People can lose their hearing at any age before they are born, as infants, during childhood, or as【C1】______. Each age of onset

People can lose their hearing at any age before they are born, as infants, during childhood, or as【C1】______. Each age of onset

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问题     People can lose their hearing at any age before they are born, as infants, during childhood, or as【C1】______. Each age of onset has a different name and the deafness may have different【C2】______.
    Prenatal deafness means that a baby is born deaf. There are several reasons【C3】______  this can happen. If parents are deaf, they may have a deaf baby. There are genes【C4】______  deafness that hearing parents can also【C5】______  on to their child. Other prenatal【C6】______  of deafness can include: accidents; medicine or drugs that the mother takes; illnesses; and genetic syndromes.
    Genetic syndromes are a group of characteristics that a child【C7】______  from its parents. There are two very common types of genetic syndromes related to deafness. One is Waardenburg’s Syndrome. Its characteristics are very【C8】______. The
person may have pigment (色素)【C9】______: a streak (条纹) of white hair; two different color eyes; or streaks of white in a man’s【C10】______. It is【C11】______  to have the physical traits of Waardenburg’s Syndrome but not be deaf.
    Usher’s Syndrome is also fairly【C12】______. Children with Usher’s Syndrome are born with a hearing loss and later lose their【C13】______. The first symptoms of this genetic syndrome【C14】______  at【C15】______  A person with Usher’s Syndrome will【C16】______  problems seeing well in the dark. Later, they will lose their peripheral (外围的) vision and see only within a tunnel area in front of them. This is called "tunnel vision." Persons may eventually lose more and more of their vision and become blind or【C17】______  blind. If you notice that a(n)【C18】______  person does not see you when you stand at his or her【C19】______, that person may have this syndrome. The best way to communicate with a person who has Usher’s Syndrome is to stand directly in front and to sign【C20】______.
【C4】
选项 A、 related to
B、 concerned about
C、 led to
D、 resulted from
答案A
解析 考查动词词组理解与使用。related to与……有关系的；concerned about担心的，忧虑的；lead to 导致，但该动词词组的过去分词不能做定语；result from 由……产生。
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大学英语四级

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