業精於勤，事立於豫

      When people want to lose weight, they often go on a diet. But is dieting the best way to lose weight? The answer is no.
      Most dieters believe eating __1__ will help them lose weight quickly. But not eating enough may cause dieters to eat a lot later. They end up __2__ the weight they lost.
      __3__ is the key to losing weight. With regular activity, the body's metabolism increases, allowing you to eat more and get __4__ . Do this and eat a lot of healthy foods, __5__ you will be able to lose weight without going hungry.

*cause 造成    * metabolism 新陳代謝    * end up 結果    * increase 增加    * regular 規則的    * allow 允許

1. (A) less (C) more (B) fewer (D) a little

2. (A) losing (C) putting up (B) putting (D) putting on 

3. (A) Sport (C) Sleep (B) Work (D) Exercise

4. (A) fat (C) heavy (B) fit (D) weak

5. (A) that (C) but (B) and (D) or

答案：

1. (A)，吃「少一點」能幫助快速減重。
          　少的比較級是 less 或 fewer，但 fewer 只能指「可數名詞」。

2. (D)，吃不過肚子會餓，造成後來又吃得更多，結果又「增加體重 (put on weight)」。

3. (D)，「運動」是減重關鍵。
           　(A) sport 要用複數型態 sports。

4. (B)，經常運動會促進新陳代謝，讓人增進食慾並變得 fit (健康)。

5. (B)，兩個句子，故要用連接詞連接。由後句意思，得知連接詞為 and (那麼)。

句型一：祈使句，and  + S + V    ( ... ，那麼 ... )

　　　　祈使句，or  + S + V    ( ... ，否則 ... )

例句：Get up early, and you will catch the bus. (早點起床，那麼你就會趕上公車。)

　　　Get up early, or you will miss the bus. (早點起床，否則你會錯過公車。)

填入 and 或 or 

練習1：Study hard, __________ you will do well on the test.

練習2：Hurry up, __________ you will be late to class.

練習3：Put on your coat, __________ you might catch a cold.

練習4：Take the medicine, __________ you will feel better.

答案：1. and  2. or  3. or  4. and

句型二：the key/answer to +名詞/V-ing (...的關鍵/解答)

例句：Concentration is the key to effective study. (專心是有效學習的關鍵。)

練習1：Hard work is the key __________ success.
　　 　(A) of (B) for (C) in (D) to

練習2：The key to__________ health is to eat healthily and exerise regularly.

　　 　(保持健康的關鍵是健康的飲食及規律的運動。)   

答案：1.  (D)  2. keeping