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不少人习惯把剩饭剩菜留作次日的午饭，这既能减少食物浪费，也省去了重复下厨的麻烦。不过，保存不当的剩饭可能潜藏健康风险。在重新加热时，确保食物内部达到足够的温度至关重要。本文简要介绍在处理剩饭时需要注意的各项安全要点。

词汇：food safety 食品安全

1 Overpriced shop-bought sandwiches, underwhelming food from your work canteen or pricey local restaurants. If those are the alternatives, then it's unsurprising that many of us think leftovers make the perfect lunch. Leftovers are a good way to cut down on food waste. If you've cooked them yourself, then you can be sure what all the ingredients are and where they've come from. But how safe are leftovers? Could there be a danger lurking in your lunchbox?

2 It's not just you that loves your leftovers. The BBC's Trust Me, I'm a Doctor programme tells us that they are also great for bacteria like listeria, salmonella and campylobacter. They can nourish themselves on the food we love and multiply incredibly quickly. One campylobacter bacterium can multiply to 70,000 million bacteria in just 12 hours. Food poisoning caused by these bacteria usually makes people mildly unwell but can also cause more serious life-threatening illnesses. What do we need to think about to keep our leftovers safe?

3 Temperature control is important to stop bacteria growing on your food. Food safety experts warn of a danger zone between 8C and 63C. At these temperatures bacteria can grow easily on your leftover food. Refrigerating your leftovers slows bacteria growth, and this is why experts recommend putting your leftover food in the fridge within two hours. You should also cover any food in the refrigerator because air can contain contaminants, and also, many pathogens need oxygen to grow. However, do remember that fridges only slow bacteria growth, not stop it, so most leftovers should only be left in the fridge for two days.

4 Temperature is also important if you are reheating leftovers. Instructions often recommend heating food until it's piping hot or steaming hot throughout. Clinical microbiology lecturer Primrose Freestone recommends that ovens are set to at least 163C and that food's internaltemperature should reach at least 74C. Other experts tell us that food heated in the microwave should be stirred halfway through the process so that it's cooked all the way through.

5 Leftovers can be an economical way to cut down on food waste. However, it's important that we store and reheat food carefully to make sure that it stays safe to eat.

测验与练习

一、将标题和段落配对。

Paragraph 1 _______
Paragraph 2 _______
Paragraph 3 _______
Paragraph 4 _______
Paragraph 5 _______

a. Avoiding ultra-processed foods
b. Reheating thoroughly
c. Bacteria love leftovers
d. Protect yourself
e. An attractive lunch option
f. Refrigeration is crucial

二、根据文章内容选出正确的选项。

1. The article says that leftovers create food waste.
a. True
b. False
c. Not given

2. What does 'they' refer to in the following sentence? They can nourish themselves on the food we love and multiply incredibly quickly.
a. leftovers
b. bacteria
c. illnesses

3. Food poisoning only ever makes people mildly ill.
a. True
b. False
c. Not given

4. What temperature should leftovers probably be stored at?
a. below 8C
b. between 8 and 63C
c. above 163C

5. Leftovers can be reheated in an oven set to 180C.
a. True
b. False
c. Not given

三、用下列单词完成对本文的总结。

Eating leftover food can be a good way to avoid 1) _______. However, it's important to store food well to avoid 2) _______. If food is left in the 3) _______ between 8C and 60C, it can become contaminated with bacteria. It's important to 4) _______ leftover food to keep it safe. While most food poisoning only makes people mildly ill, some instances can be 5) _______.

nourish
refrigerate
food poisoning
danger zone
life-threatening
food waste
internal temperature

（答案见词汇表后）

词汇表

food waste 厨余垃圾，食物浪费
lurking 潜伏的，隐藏的
bacteria 细菌
listeria 李斯特菌
salmonella 沙门氏菌
campylobacter 弯曲杆菌
nourish 滋养，为…提供营养
food poisoning 食物中毒
mildly 轻微地，温和地
life-threatening 危及生命的，致命的
danger zone 危险区间，危险地带
refrigerate 冷藏
contaminant 污染物
pathogen 病原体
reheat 重新加热
piping hot 滚烫的
steaming hot 热气腾腾的
internal temperature 内部温度
stir 搅拌
economical 经济实惠的，节省的

答案

一、将标题和段落配对。

Paragraph 1 e) An attractive lunch option
Paragraph 2 c) Bacteria love leftovers
Paragraph 3 f) Refrigeration is crucial
Paragraph 4 b) Reheating thoroughly
Paragraph 5 d) Protect yourself

二、根据文章内容选出正确的选项。

1. b. False.Leftovers are a good way to cut down on food waste.

2. b. The pronoun 'they' refers to the bacteria like listeria, salmonella and campylobacter mentioned in the previous sentence.

3. b. False.Food poisoning caused by these bacteria usually makes people mildly unwell but can also cause more serious life-threatening illnesses.

4. a.Food safety experts warn of a danger zone between 8C and 63C. At these temperatures bacteria can grow easily on your leftover food.

5. a. True.Clinical microbiology lecturer, Primrose Freestone recommends that ovens are set to at least 163C and that food's internal temperature should reach at least 74C.

三、用下列单词完成对本文的总结。

Eating leftover food can be a good way to avoid food waste. However, it's important to store food well to avoid food poisoning. If food is left in the danger zone between 8C and 60C, it can become contaminated with bacteria. It's important to refrigerate leftover food to keep it safe. While most food poisoning only makes people mildly ill, some instances can be life-threatening.