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单选题

    Even if families don’t sit down to eat together as frequently as before, millions of Britons will nonetheless have got a share this weekend of one of that nation’s great traditions: the Sunday roast. (1)_____ a cold winter’s day, few culinary pleasures can (2)_____  it. Yet as we report now, the food police are determined that this (3)_____ should be rendered yet another guilty pleasure (4)_____ to damage our health.

    The Food Standards Authority (FSA) has (5)_____ a public warning about the risks of a compound called acrylamide that forms in some foods cooked (6)_____ high temperatures. This means that people should (7)_____ crisping their roast potatoes, reject thin-crust pizzas and only (8)_____ toast their bread. But where is the evidence to support such alarmist advice? (9)_____ studies have shown that acrylamide can cause neurological damage in mice, there is no (10)_____ evidence that it causes cancer in humans.

    Scientists say the compound is (11)_____ to cause cancer but have no hard scientific proof. (12)_____ the precautionary principle, it could be argued that it is (13)_____ to follow the FSA advice. (14)_____, it was rumoured that smoking caused cancer for years before the evidence was found to prove a (15)_____.

    Doubtless a piece of boiled beef can always be  (16)_____ up on Sunday alongside some steamed vegetables, without the Yorkshire pudding and no wine. But would life be worth living? (17)_____, the FSA says it is not telling people to cut out roast foods (18)_____, but to reduce their lifetime intake. However, its (19)_____ risks coming across as being pushy and overprotective. Constant health scares just (20)_____ with no one listening.

(6)

A
under
B
at
C
for
D
by
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答案:

B

解析:

答案精析:介词辨析题。空格所在句中acrylamide(丙烯酰胺)后面是that引导的定语从句,用来解释说明这种物质是如何产生的。结合上下文,很容易推断出that forms in some foods cooked ____ high temperatures大意是:在高温中烹制食品时产生。本题考查的是“在高温中”这一表达中介词的用法。at a high/low temperature(在高/低温中)是固定搭配,故B项正确。

错项排除:under一般用于表示方位或者低于某一数值,for表示目的,而by表示方式或被动,与high temperatures搭配无法表示“在高温中”,故A、C、D项均可排除。

长难句分析:The Food Standards Authority (FSA) has issued a public warning about the risks of a compound called acrylamide that forms in some foods cooked at high temperatures.

本句的主干为The Food Standards Authority (FSA) has issued a public warning,为主谓宾结构。about the risk of a compound为介词短语作后置定语,修饰warning。called acrylamide为过去分词结构作后置定语,修饰compound。之后是一个that引导的定语从句,修饰先行词acrylamide。在句子末尾,过去分词结构cooked at high temperatures作后置定语,修饰foods。

句意为:在高温中烹饪食物时,会产生一种叫做丙烯酰胺的化合物。食品标准局已经发布了一项关于该化合物风险的公开警告。

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