2. 考研
  3. A war on sugar has begun in the UK that echoes the nation’s successful campaign against salt. The effort is【C1】______because it

A war on sugar has begun in the UK that echoes the nation’s successful campaign against salt. The effort is【C1】______because it

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问题     A war on sugar has begun in the UK that echoes the nation’s successful campaign against salt. The effort is【C1】______because it could help to reduce obesity, but cutting sugar out of people’s diets poses【C2】______challenges.
    Last week, a group of academics and policy【C3】______specializing in medicine and【C4】______announced that they had formed a campaign group, Action on Sugar. Their idea is to convince manufacturers to【C5】______and gradually lower the【C6】______of sugar added to foods—so slowly that it isn’t missed by【C7】______.
It is essentially the same【C8】______as a campaign that is【C9】______credited with reducing British people’s salt intake.
    Over the past decade, CASH, a non-government organisation, helped to create anti-salt【C10】______ aimed at the general public, 【C11】______year-by-year targets for companies to reduce salt levels. These were 【C12】______but had the backing of the government, and it was【C13】______that the targets would be legally enforced if companies【C14】______. Most manufacturers lowered their salt levels —and, 15 , there has been a【C15】______per cent 【C16】______in salt intake in the UK, according to CASH.
    Repeating the trick with sugar may be more【C17】______not least because we do not know for sure if our palates (sense of taste) can adjust to eating food that is less【C18】______. By contrast, studies have shown that if volunteers are forced to eat a less salty diet, over several weeks they gradually begin to【C19】______food that is less salty. "There’s no reason to think that would not hold【C20】______for sweet taste too," says Charles Spence, a neurogas-tronomist at the University of Oxford.
【C12】
选项 A、voluntary
B、unwilling
C、illegal
D、reluctant
答案A
解析 由but可知，空格与下文的意思存在转折。下文提及“取得了政府的支持，这意味着这些目标将会被依法强制执行”。可知此空应与下文的be legally enforced相反。故选A项voluntary“自愿的”。
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