Question

【題目】Dust on furniture may be bad news for waistlines (腰圍). But it’s far too early to add dusting to a weight-loss plan. Dietary fats and other materials that make up indoor dust can send a signal to human fat cells, telling them to grow. That process, in turn, might slow the body’s rate of burning energy. Such changes could add to any weight problems a person might have.

“We don’t know what that means to long-term health and certain diseases yet,” says Heather Stapleton, one of the study’s authors. But she notes that her team’s findings also raise a question of whether pollutants in dust might play some role in the growing, global problem of obesity (肥胖).

Stapleton and her colleagues collected dust from homes and offices. Studies found that some materials in the dust could turn on a protein (蛋白質(zhì)) called PPAR-gamma 1. It’s found in many human tissues. Turning this protein on can cause fat cells to grow. Researchers think this protein may be involved in obesity. But a second study now finds evidence that certain fats are mostly to blame. Cooking oils may send out some of these fats into the air, where they eventually find their way into house dust. Or, the authors say, the fats might enter house dust as part of the hair or skin cells shed (脫落) by people or pets.

“While the findings are amazing,” says Mitchell Lazar, another study author, “these findings need to be taken as very limited.” Indeed, he adds several cautions about how the findings should be understood. “For one thing, people eat these fats in foods all of the time. That is likely to be a lot more than would be consumed from indoor dust,” he said.

【1】What do we know about PPAR-gamma 1? _____

A. It comes from dust.

B. It leads to weight gain.

C. It can help get rid of dust.

D. It only appears in human bodies.

【2】 What’s the best title for the text? _____

A. Can house dust make us fat?

B. Why is it important to clean?

C. Anything to do to deal with dust?

D. What is the best way to lose weight?

Answer 1

【答案】

【1】B

【2】A

【解析】

試題分析：據(jù)世界癌癥研究基金會(huì)（WCRF）的一項(xiàng)新研究發(fā)現(xiàn)，近一半女性因?yàn)槠涑�大腰圍而�?dǎo)致癌癥危險(xiǎn)大增。研究人員表示，腰圍過大還會(huì)增加罹患糖尿病和心臟病的危險(xiǎn)。

9.【1】B推理判斷題。根據(jù)第三段第二句Studies found that some materials in the dust could turn on a protein (蛋白質(zhì)) called PPAR-gamma 1.研究發(fā)現(xiàn)在灰塵當(dāng)中的一些材料可能轉(zhuǎn)變成叫PPAR-gamma 1的蛋白質(zhì)。第五句Researchers think this protein may be involved in obesity.研究者認(rèn)為這種蛋白質(zhì)可能與肥胖有關(guān)。故選B。

【2】A主旨大意題。根據(jù)第一段第一句Dust on furniture may be bad news for waistlines (腰圍). 家具上的灰塵能使腰圍增粗。Studies found that some materials in the dust could turn on a protein (蛋白質(zhì)) called PPAR-gamma 1.研究發(fā)現(xiàn)在灰塵當(dāng)中的一些材料可能轉(zhuǎn)變成叫PPAR-gamma 1的蛋白質(zhì)。第五句Researchers think this protein may be involved in obesity.研究者認(rèn)為這種蛋白質(zhì)可能與肥胖有關(guān)。第三段最后一句the authors say, the fats might enter house dust as part of the hair or skin cells shed (脫落) by people or pets.動(dòng)植物油通過人或?qū)櫸锩撀涞拿�發(fā)或皮膚進(jìn)入到房子的灰塵。“房子里的灰塵能使我們變胖嗎”？可知A項(xiàng)符合題意。

【名師點(diǎn)撥】

推理判斷題要求在理解原文表面文字信息的基礎(chǔ)上，做出一定的推理判斷，從而得到文章的隱含意義和深層意義。推理判斷題所涉及的內(nèi)容可能是文中的某一句話，也可能是某幾句話，所以，推理題的答案只能是根據(jù)原文表面文字信息一步推出的答案：即對(duì)原文某一句話或某幾句話所作的同義改寫或綜合。推理判斷題的題干中通常含有infer, suggest, imply, conclude indicate等標(biāo)志性詞語(yǔ)。 這種題型主要包括細(xì)節(jié)判斷題、態(tài)度觀點(diǎn)推斷題、寫作意圖推斷題、文章出處判斷題和猜測(cè)想象推斷題。9.【1】B推理判斷題。根據(jù)第三段第二句Studies found that some materials in the dust could turn on a protein (蛋白質(zhì)) called PPAR-gamma 1.研究發(fā)現(xiàn)在灰塵當(dāng)中的一些材料可能轉(zhuǎn)變成叫PPAR-gamma 1的蛋白質(zhì)。第五句Researchers think this protein may be involved in obesity.研究者認(rèn)為這種蛋白質(zhì)可能與肥胖有關(guān)。故選B。