2. 外语
  3. Fears of "mad cow" disease spread【C1】______ the globe last week【C2】______ South Mrica, New Zealand and Singapore joining most of

Fears of "mad cow" disease spread【C1】______ the globe last week【C2】______ South Mrica, New Zealand and Singapore joining most of

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问题     Fears of "mad cow" disease spread【C1】______ the globe last week【C2】______ South Mrica, New Zealand and Singapore joining most of Britain’s European Union partners in【C3】______ imports of British beef. In London, steak restaurants were empty following the March 20 announcement by scientists that they had found a【C4】______ link between mad cow disease from British beef and its human【C5】______ , Creutzfeldt-Jakob disease (CJD).
    Efforts to reassure consumers and governments proved【C6】______ . France, Germany, Italy, Finland and Greece were among countries which announced bans【C7】______ British beef shipments.
    A committee of EU veterinary experts, meeting in Brussels,【C8】______ new protective measures but said transmission of the disease from cattle to humans was unproven and did not【C9】______ a general ban on British beef exports. Britain’s own main consumer group advised people to【C10】______   beef if they wanted to be absolutely sure of not【C11】______ CJD which destroys the brain and is always【C12】______  
    "Could it be worse than AIDS?"
    The stark headline in Friday’s Daily mail newspaper encapsulated the fear and uncertainty【C13】   Britain. CJD【C14】______  humans in the same way that BSE makes cows mad--by eating away nerve cells in the brain【C15】______ it looks like a spongy Swiss cheese.
    The disease is incurable. Victims show【C16】______ of dementia and memory loss and usually die【C17】______  six months.
    Little is known【C18】______  sure about the group of diseases known collectively as spongiform encephalopathies, which explains【C19】______  some eminent scientists are not prepared to【C20】______  a human epidemic of AIDS-like proportions.
【C19】
选项 A、how
B、why
C、what
D、when
答案B
解析 注意前面出现了一个explain，可知是为了说明原因，由此可判断这里应填入why，引出一个原因状语从句。
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