43. Oil prices have risen by 32 percent since the start of the year, ____ a record US$57.65 a barrel on April 4. (2005山東)
　　A. have reached
　　B. reaching
　　C. to reach
　　D. to be reaching
　　【解析】選B分詞在句中做結(jié)果狀語(yǔ)，可參見(jiàn)本單元的句型6。
　　44. ____ the pot for me, and don't let the milk come out. I'll be back soon.
　　A. Observe
　　B. Notice
　　C. Watch
　　D. Look out
　　【解析】選Cwatch 表示集中精力“照料，監(jiān)視”，本句意為“幫我看著壺，別讓牛奶溢出來(lái)?！保籵bserve意為“觀察”，表示動(dòng)作；Notice指“注意到”表示結(jié)果；look out后面不能接賓語(yǔ)。