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(2) It’s sometimes hard to tell one twin from _________.

A. another                 B. some other            C. other                    D. the other

答案選D，twin 意為“孿生子之一”、“雙胞胎之一”，即指兩者之一，故用 one…the other 這一結(jié)構(gòu)。

29. You are _________ careful than your brother. You two can’t do the work that needs care and skill.   

A. not more             B. no more               C. not less               D. no less

選對(duì)此題，至少要弄清兩點(diǎn)：一是下文的語(yǔ)境，二是 not more than, no more than 等結(jié)構(gòu)的含義。下文說(shuō) You two can’t do the work that needs care and skill(你們兩個(gè)都不適合做這需要細(xì)心和技巧的工作)，這就表明這兩個(gè)人都不是很仔細(xì)的人。再看選項(xiàng)中所涉及的幾個(gè)結(jié)構(gòu)的意思：

not more … than = 不如……(www.52ysedu.com)

no more … than = 和……一樣不(否定兩者)

not less … than = 不如……不（即指不如 less 后形容詞的反面）

no less … than = 和……一樣(肯定兩者)

比較以下各句的意思：

You are more careful than he is. 你比他仔細(xì)。

You are not more careful than he is. 你不如他仔細(xì)。

You are no more careful than he is. 你和他一樣不仔細(xì)。

You are less careful than he is. 你不如他仔細(xì)（你比他粗心）。

You are not less careful than he is. 你比他仔細(xì)（你不如他粗心）。

You are no less careful than he is. 你和他一樣仔細(xì)。

綜合以上分析，上面一題的最佳答案應(yīng)是B。

30. I want very much to buy a colour TV set, but I can’t afford _________.

A. it                         B. one                      C. this                     D. that

答案選B，但容易誤選A。it 和 one 的區(qū)別可簡(jiǎn)單地概括為：it = the + 名詞，one = a + 名詞。如：

I haven’t any dictionaries, and I want to borrow one. 我沒(méi)有詞典，我想借一本。(one = a dictionary)

I have two dictionaries, and I can lend one to you. 我有兩本詞典，我可以借一本給你。(one = a dictionary)

I have a dictionary, and I can lend it to you. 我有一本詞典，我可以把它借給你。(it = the dictionary)

根據(jù)上面一題的語(yǔ)境，句子后半截顯然應(yīng)該是 … but I can’t afford a colour TV set，而不是 but I can’t afford the colour TV set，所以答案選B。

31. I have no idea _________ is better, so I took both of them.

A. what                    B. which                   C. how                     D. why

【分析】此題應(yīng)選 B。C或D 不能選，是因?yàn)樗鼈兪歉痹~，不能用作主語(yǔ)。A和 B 均為代詞，均可用作主語(yǔ)，其區(qū)別是：which 通常指有明確范圍的選擇，而 what 則通常指沒(méi)有明確范圍的選擇，那么到底本句所體現(xiàn)的選擇范圍是明確還是不明確呢？請(qǐng)注意句中的隱藏信息 better 和 both of them，這說(shuō)明選擇范圍是明確的(即只有兩者)，故選 B 為佳。

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