參考答案及解析：

　　鞏固與拓展

1. His success result from part in his ability to sell the product and

in part from his policy of expanding during periods of economical __________

decline, when most of his competitors were reducing their investments.

economical -> economic

　　economical意為“節(jié)儉的”，economic意為“經(jīng)濟的”，此處說的是經(jīng)濟滑坡，所以應(yīng)該是economic decline。

2. There is a train which leaves London at 5pm and

arrives Cambridge at 6:45pm. __________

arrives -> reach或arrives后加in

　　arrive是不及物動詞，表示“到達”時如果后面要跟地方就要加上介詞或者將其改成與其同義的及物動詞reach。

3. In fact, psychologists adapt a similar approach to scientists in other fields ______

adapt -> adopt

adapt意為“使…適應(yīng)”，adopt意為“采用，收養(yǎng)”，根據(jù)句意應(yīng)該是用后者。

4. They are far more probable to report that they don’t have the time to ______

read the papers and have no interest in the content.

probable -> likely

　　兩者都有“可能的’之意，但是用probable時，主語只能是物或者形式主語it，而使用likely對于主語沒有特別的要求。

5. Ever since the enclosures, wool and then woolen cloth

had been the principle exports of England ________

principle -> principal

　　principle意為“原則”;principal可以作形容詞，意為“主要的”，也可作名詞，意為“校長”。此處意為“主要出口商品”，故應(yīng)該使用principal。

綜合訓(xùn)練：

1. and -> but

　　根據(jù)上下文，此處應(yīng)為轉(zhuǎn)折關(guān)系

2. other -> others

　　這里是some….others的固定用法。

3. for -> since

　　for和since都可以表示“因為”，但是for表示原因引導(dǎo)得從句一般放在句末，所以在此處不對

4. made -> made it

　　句子主語是law，位于是made，easier是賓語補足語，邏輯賓語是easier后面的to get a divorce，可見此句缺少形式賓語it。

5. end -> ends

　　主語one marriage in every three 是單數(shù)，故謂語動詞也要用單數(shù)。

6. with -> of

　　形容詞tolerant后面只能用of。還原原句為Society is now more tolerant than it used to be ( tolerant) of unmarried people。

7. the fact -> the fact that

　　fact之后的部分是同位語從句，補充說明fact

8. cause -> result

　　s a cause of意為“作為…的原因”，as a result of意為“作為…的結(jié)果”，根據(jù)上下文語義，應(yīng)該用后者。

9. consist -> consisting或consist前加which或that

　　句子結(jié)構(gòu)混亂。簡單句中不能同時出現(xiàn)兩個謂語動詞。

10.are -> were