【題目】The choices people make can cause cancer. Not everyone who 【1】 (use) tobacco products will get cancer, but the chance of getting certain 【2】 (type) of cancer increases with tobacco use. The recent research 【3】 (show) us that the constant misuse or overuse of alcohol may cause cancer of the mouth and throat as well recently.

Sometimes cancer can be caused by radiation 【4】 (find) in sunlight and X-rays, in addition 【5】 other places. This doesn't mean you should stop getting X-rays or stay indoors, but limiting your 【6】 (expose) to radiation can reduce the chances of developing cancer. The X-rays you get at 【7】 doctor's or dentist's office are not 【8】 (typical) enough to cause cancer.

And sometimes, the reason 【9】 someone gets cancer is simply an unfortunate mystery. Some cells in the body may start to increase and change. Doctors and researchers can see it happening, 【10】 they cannot provide a description of why it started.

【答案】

【1】uses

【2】types

【3】has shown

【4】found

【5】to

【6】exposure

【7】the

【8】typically

【9】why

【10】but

【解析】本文是一篇說明文。文章主要介紹了癌癥的成因。

【1】考查了主謂一致。本處who指代先行詞everyone，從句的謂語動(dòng)詞應(yīng)用單數(shù)形式；敘述一般的情況應(yīng)用一般現(xiàn)在時(shí)，故本處用uses。句意：不是每個(gè)使用煙草產(chǎn)品的人都得癌癥。故用uses。

【2】考查名詞。certain前沒有冠詞，且type為可數(shù)名詞，certain types of cancer意為“某些種類的癌癥”。句意：但是吸煙會(huì)使某些癌癥的發(fā)病率增加。故填types

【3】考查時(shí)態(tài)。主語research與show之間是主謂關(guān)系，又由時(shí)間狀語“recently”可知應(yīng)用現(xiàn)在完成時(shí)，主語為單數(shù)。句意：最近的研究表明。故用has shown。

【4】考查非謂語動(dòng)詞。本處find與被修飾的名詞之間為動(dòng)賓關(guān)系，故用過去分詞形式。句意：有時(shí)癌癥是由日光、X光以及別的地方發(fā)現(xiàn)的輻射引起的。故用found。

【5】考查短語固定搭配。in addition to“此外”。句意：除了其他地方。故填to。

【6】考查名詞。本處物主代詞your后加名詞形式。句意：限制你對(duì)輻射的接觸(exposure)能夠降低患癌癥的可能性。故填exposure。

【7】考查冠詞。the doctor's指“診所”，因此此處用定冠詞the。句意：在醫(yī)生或牙醫(yī)的辦公室。故填the。

【8】考查副詞。因?yàn)?/span>enough為形容詞，故前面用副詞修飾。句意：通常不足以引起癌癥。故填typically。

【9】考查定語從句關(guān)系詞。本處先行詞為the reason，定語從句中缺原因狀語，故用關(guān)系副詞。句意：有時(shí)，某人得癌癥的原因確實(shí)是一個(gè)不幸的謎。故填why。

【10】考查連詞。上下句之間可知為轉(zhuǎn)折關(guān)系。句意：醫(yī)生和研究人員能夠看到細(xì)胞的擴(kuò)散和變化，但是不能描述這為什么發(fā)生。故用but。

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