Question

【題目】 While you are heating your food, you may wonder how close you can safely stand next to a microwave, and whether any radiation could escape from the device and potentially harm you.

In theory, microwaves can heat body tissues in the same way they heat food, and at high levels, microwaves can cause burns and cataracts. 【1】 They will generally occur when people are exposed to large amounts of radiation escaping through openings in the oven. As a result, there is little cause for concern about using microwaves ovens, unless there is damage to the door.

Still, the FDA (美國(guó)食品和藥物管理局) recommends that you check your microwave oven carefully and do not use it if the door doesn't close properly, or if it is "bent, warped, or otherwise damaged." 【2】

As far as injuries from microwave ovens go, the most common way people are injured is via heat-related burns from touching hot containers or overheated foods, or being exposed to exploding liquids. 【3】

The agency also warns that, when you use a microwave to heat water in a cup, there's a risk of the water becoming "superheated," which means it has heated past its boiling point. 【4】But just a slight disturbance to the water — which can occur when touching or picking up the cup — can cause an eruption of boiling water. This can lead to skin burns or scalding injuries, particularly on the face and hands. To prevent superheated water from forming, the FDA says people should not exceed the recommended heating time for water, as indicated in the oven's instruction book.

【5】

A.But these types of injuries are very rare.

B.When this happens, the water does not appear to be boiling.

C.However, injuries from microwave radiation are unavoidable sometimes.

D.Though microwaves don't affect health as X-rays do, that doesn't mean they are risk-free.

E.People should use common-sense precautions when handling hot foods in microwaves.

F.Indeed, it's a good idea to follow the instruction book to help keep yourself safe when using it.

G.Besides, it is suggested that you don't lean against a microwave for too long during operation.

Answer 1

【答案】

【1】A

【2】G

【3】E

【4】B

【5】F

【解析】

這是一篇說(shuō)明文。當(dāng)你在加熱食物的時(shí)候，你可能想知道你站在微波爐旁邊有多安全，是否有任何輻射會(huì)從微波爐中逸出并對(duì)你造成潛在的傷害。文章介紹用微博爐時(shí)應(yīng)注意的事項(xiàng)。

【1】根據(jù)上文提示“從理論上講，微波可以像加熱食物一樣加熱人體組織，如果加熱的程度過(guò)高，微波會(huì)導(dǎo)致燒傷和白內(nèi)障。”再根據(jù)下文提示“它們通常發(fā)生在人們暴露在通過(guò)烤箱開(kāi)口泄漏的大量輻射中時(shí)。”承接上下文，A項(xiàng)But these types of injuries are very rare.（但是這種類(lèi)型的傷害非常罕見(jiàn)。）切題。該項(xiàng)中的but表示一種轉(zhuǎn)折關(guān)系，故選A。

【2】根據(jù)上文提示“盡管如此，美國(guó)食品和藥物管理局還是建議你仔細(xì)檢查你的微波爐，如果微波爐的門(mén)關(guān)不上，或者門(mén)‘彎曲、變形或其他損壞’，不要使用微波爐。”承接上文，G項(xiàng)Besides, it is suggested that you don't lean against a microwave for too long during operation.（另外，在操作過(guò)程中，不要太長(zhǎng)時(shí)間地倚靠在微波爐上。）切題。故選G。

【3】根據(jù)上文提示“就微波爐造成的傷害而言，人們最常見(jiàn)的受傷方式是接觸熱容器或過(guò)熱的食物，或接觸爆炸的液體，從而導(dǎo)致灼傷。”承接上文，E項(xiàng)People should use common-sense precautions when handling hot foods in microwaves.（人們?cè)谑褂梦⒉�爐加熱食物時(shí)應(yīng)采取常識(shí)性的預(yù)防措施。）切題。故選E。

【4】根據(jù)上文提示“該機(jī)構(gòu)還警告說(shuō)，當(dāng)你用微波爐加熱杯子里的水時(shí)，有水變得“過(guò)熱”的風(fēng)險(xiǎn)，這意味著水的溫度超過(guò)了沸點(diǎn)。”承接上文，B項(xiàng)When this happens, the water does not appear to be boiling.（當(dāng)這種情況發(fā)生時(shí),水似乎不會(huì)沸騰。）切題。故選B。

【5】根據(jù)上文提示“為了防止過(guò)熱的水形成,FDA說(shuō),人們不應(yīng)該超過(guò)推薦的水加熱時(shí)間,正如在烤箱的說(shuō)明書(shū)所示。”承接上文，F項(xiàng)Indeed, it's a good idea to follow the instruction book to help keep yourself safe when using it.（事實(shí)上，在使用的時(shí)候按照說(shuō)明書(shū)來(lái)確保自己的安全是個(gè)好主意。）切題。故選F。