补充：
convert: vt.(常与into连用)转变;变换; 兑换
e.g. That building has been converted into a school.
那座楼房改成学校了。
e.g. I want to convert some Hong Kong dollars into American dollars.
我想把一些港元换成美元
3. Hundreds of years ago cloves (丁香)were used to remedy headaches.
A) disrupt B) diagnose C) evaporate D) cure
答案及解析: D. 解题思路：备选答案均为动词，关注原句中的宾语headaches(头痛)。解题思路：在习惯搭配上，B和D都可带“疾病类”的词作宾语，但头痛不用 diagnose (诊断)，却可cure (治疗)头痛，所以答案为D。另外diagnose 的用法是：diagnose… as...，如：The plastic surgeon diagnosed my illness as a rare bone disease./整形外科医生诊断出我的病是一种罕见的骨病。
4. Experts generally agree that diet has an important bearing on ones health.
A) result B) factor C) cause D) influence
答案及解析: D。 解题思路：从习惯搭配的角度解题：只有D才能和介词on搭配使用。
补充：
influence n. (常与on连用)影响力;感化力; vt. 影响
e.g. Many a woman has had an influence upon her husband. 许多妇女对其丈夫有影响。
Bearing: n. (与on, upon连用)关系
e.g. What they have done has no bearing on the promotion of sales.
他们所干的事情与这次促销活动毫无联系
5. Mary was compelled to take in washing to help support her family.
A) pleaded B) appealed C) forced D) instructed
答案及解析: C. 解题思路：借助句意：Mary。。在家里帮别人洗衣服以帮助养家糊口。而C的含义最合适句意。被选项中：