Question

【題目】 We know that too much of the wrong kind of food can be bad for our health, but for some people having a food allergy, eating certain things can actually be harmful. Now it is seemingly affecting more and more of us.

An allergy is caused by the immune system fighting substances in the environment, known as allergens, that it should see as harmless. 【1】It means people have to spend their lives following strict dietary restrictions and worrying about the ingredients of everything they consume. We often hear about people having allergies to dairy products and to peanuts. Last year a teenager died after suffering a fatal allergic reaction from eating a baguette containing sesame seeds. 【2】

Research has found that this problem is particularly affecting children. 【3】 Dr Alexandra Santos from King’s College London says food allergy now affects about 7 percent of children in the UK, and 9 percent of those in Australia.

【4】 Dr Santos says, the increase in allergies is not simply the effect of society becoming more aware of them and better at diagnosing them. 【5】 She adds that possible factors are pollution, dietary changes and less exposure to bacteria, which change how our immune systems respond.

A.So what might be the cause?

B.It seems to be more environmental.

C.Similarly, food allergic reaction is deadly.

D.This led to a call for better food-labeling laws.

E.Besides, more adults are suffering from food allergies.

F.However, food allergies can cause life-threatening reactions.

G.More and more of them are having allergic reactions to certain foodstuffs.

Answer 1

【答案】

【1】F

【2】D

【3】G

【4】A

【5】B

【解析】

這是一篇說明文。對于有些人來說，食物過敏嚴(yán)重影響身體健康，甚至導(dǎo)致死亡。越來越多的人食物過敏，除了社會因素之外，環(huán)境問題干系更大。

【1】

上一句說過敏反應(yīng)是由于免疫系統(tǒng)對抗環(huán)境中的物質(zhì)及過敏原引起，這些物質(zhì)應(yīng)該是免疫系統(tǒng)視為無害的。這一句是對上一句的補充說明和修正：食物過敏可能會引起威脅生命的反應(yīng)。故選F。

【2】

上一句說去年有一個少年因食用含有芝麻的長棍面包而引發(fā)過敏致死，合理邏輯推理，這一事件會導(dǎo)致人們呼吁立法推進(jìn)優(yōu)化食品標(biāo)簽。故選D。

【3】

這句話在段中承上啟下。前一句說研究發(fā)現(xiàn)過敏問題尤其對孩童影響很大。很面一據(jù)用數(shù)據(jù)說明在英國和澳大利亞患過敏癥的孩童的百分比，關(guān)鍵詞是allergy和children，中間這據(jù)說越來越多的孩童對某些食物過敏，把前后句銜接了起來，故選G。

【4】

段首句為這段的中心句。后文Dr Santos談到引起過敏癥的原因，此處用一個問句引出后文。故選A。

【5】

上一句說過敏癥的增加不僅是社會意識增強和診療更先進(jìn)的結(jié)果，此句承上說明引起過敏癥的更重要原因。故選B。

七選五的解題技巧之一是根據(jù)上下文關(guān)鍵詞匯來鎖定線索。即：要關(guān)注空白前后的名詞和動詞，然后在選項中查找它們的近義詞、反義詞、同義詞、同根詞等。其次是一些專有名詞，比如說數(shù)詞、代詞、時間、年代、地點/名稱等。在本文中，第1小題中的“allergy”、“life-threatening”，第2小題中的“this”，第3小題中的“them”、“allergic”，第4小題中的“cause”，均與上下文有相呼應(yīng)的詞語。