Exercise is one of the few factors with a positive role in long term maintenance of body weight. Unfortunately, thatmessage has not gotten through to the average American,that would rather try __1__ switching to "light" beer and low-calorie bread than increase physical exertion. The Centers forDisease Control, for example, found that fewer than one-fourth of overweight adults were trying to shed __2__ poundssaid they were combining exercise with their diet.
In rejecting exercise, some people may be discouraged too much by calorie-expending charts;for example, one would have to __3__ briskly walk three miles just to work the 275 calories in one__4__ delicious Danish pastry. Even exercise professionals concede half a point here. "Exercise initself is a very tough way to lose weight," __5__ says York Onnen, the program director of thePresident's Council on __6__ Physical Fitness and Sports.
Therefore, exercise's supporting role in weight reduction is vital. __7__ A study at the BostonUniversity Medical Center of overweight police officers and other public employees confirmed thatthose who diet __8__ without exercise regained almost all their old weight, while those whoworked exercise into their daily routine maintained their new weight.
If you decide to start walking one mile a day, the added exercise could burn an extra 100 caloriesdaily. In a year's time, assumed no __9__ increase in food takein, you could lose ten pounds. Byincreasing the __10__ distance of your walks gradually and making other dietary adjustments,youmay lose even more weight.
參考答案及解析:
1.that--who.that從句修飾的是the average American，而且它是一個(gè)非限定性定語(yǔ)從句，而that無(wú)法引導(dǎo)一個(gè)非限定性定語(yǔ)從句，所以應(yīng)把that改為who。
2.adults^--who.found后接的從句中主要的動(dòng)詞應(yīng)該是said，而不是try to shed pounds，所以應(yīng)該在were前面加上who構(gòu)成定語(yǔ)從句修飾overweight adults。
3.expending--expenditure.由于caloric是形容詞，表示“屬于或者關(guān)于卡的”，它后面不能接動(dòng)詞的-ing形式，而且expending和charts的關(guān)系也不成立，所以應(yīng)該改為名詞expenditure。
4.work^--off.work off有消耗之意，符合文義。
5.in--by(直接把in 去掉也可以吧?).in itself 表示“本身，本質(zhì)上”，而我們都知道鍛煉是一減肥的好方法，只是不能僅靠鍛煉，還需配之以適當(dāng)?shù)娘嬍晨刂疲詰?yīng)該把in itself換成by itself，表示“單獨(dú)”。
6.the(program)--/.在用作同位語(yǔ)表示獨(dú)一無(wú)二的職位的名詞之前，通常用零冠詞。
7.Therefore--Still/Neverthless.根據(jù)上下文，這里要表達(dá)的關(guān)系是讓步，不是因果。
8.diet--dieted.這里敘述的是過(guò)去的一項(xiàng)研究。
9.assumed--assuming.assume和you的關(guān)系應(yīng)是主動(dòng)的，所以應(yīng)改為assuming。
10.takein--intake.take in 表示“攝入，吸收”，它的名詞形式不是take in，而是 intake。