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, spurn 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 be carcinogenic” 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 rumored 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, their (19) _____ risks coming across as exhortation and nannying. Constant health scares just (20) _____ with no one listening.
结合第9题，尽管研究表明丙烯酰胺可引起小鼠神经损伤，但是没有（决定性）的证据表明它会导致人类患癌症。conclusive意为“决定性的”，符合上下语义。故正确答案为C。
