【題目】 Participation in sports benefits health, encourages self-discipline, and develops character and teamwork. The positive effects of sport are well-known: improved body system and muscular fitness lower risk of obesity and depression, and an increased life quality. 【1】

Here is one-sports addiction. It may sound contradictory, because we usually reserve the word “addiction” for things that are bad for us, such as drug abuse or alcoholism.【2】Caused by the release of “happiness hormones(荷爾蒙)” after exercising, you can feel really “high” and be hooked on this feeling, which, like those produced by illegal drugs and alcohol, can be habit-forming.

Sports addiction is not taken seriously by everyone, though.【3】Sports addiction is, however, real and harmful.

Sport addicts share many symptoms with other sorts of addicts.【4】This is because they don't give them the chance to recover from working out. They have been so addicted to sports that they don't take time to recover from injuries. Chances of heart attacks and passing out increase, so sports addicts can put themselves at serious risk of harm.

【5】They become dependent on training for feeling good, and life away from training becomes dull. They can also develop tolerance to the “high”, and so need more and more exercise to get the same result. And when not exercising, they experience withdrawal effects, depression and anxiety.

A.They harm their bodies.

B.It may lead to physical injuries.

C.“There're worse things to be addicted to,” some people disagree.

D.Meanwhile, sport addicts may suffer withdrawal symptoms as well.

E.But there really is a sense in which you can become addicted to exercise.

F.Apart from physical damage, sport addicts suffer psychological damage too.

G.Based on all this good news, one might wonder whether there is any drawback.

【答案】

【1】G

【2】E

【3】C

【4】A

【5】F

【解析】

本文是說明文。主要介紹了沉迷體育鍛煉的危害。

【1】本題位于第一段的段末，通常有承上啟下的作用。根據(jù)上文講述的參加體育鍛煉的好處和下文的不好，所以推測這句應(yīng)該是：基于以上好消息，人們可能會想是否有缺點。故選G。

【2】根據(jù)上一句列舉的吸毒、酗酒這些不好的事情，以及下文說到運動后真的會感覺很興奮，就像吸毒和喝酒一樣會讓人上癮。所以，這里應(yīng)該是說：鍛煉真的會讓一個人有沉迷的感覺。故選E。

【3】根據(jù)前一句說：有些人并不把沉迷鍛煉當(dāng)成一回事，下文說：但是沉迷鍛煉真的存在且有害，所以，這里應(yīng)該是，不把沉迷鍛煉當(dāng)成一回事的人的表現(xiàn)：有些人不同意:“還有更糟糕的事情讓人上癮”。故選C。

【4】根據(jù)前一句說：沉迷鍛煉會有一些癥狀。后一句：這是因為他們沒有給他們從鍛煉中恢復(fù)的機會。后一句解釋了沉迷鍛煉造成危害的原因。以及后面的heart attacks，因此本句應(yīng)該是陳述“他們對身體有害�！惫蔬xA。

【5】本句位于段首，有總起的作用。根據(jù)前一段說的是沉迷鍛煉會傷害身體，后文又有depression and anxiety這些描述心理的詞，所以，這里應(yīng)該是：沉迷鍛煉除了對生理有害，對心理也有害。故選F。

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