E by buying prepared food
F the popularization of convenience food
5 Many people agree that food prices have increased sharply but they have failed _____
分析：直接根據(jù)搭配語(yǔ)法判斷答案可能出自D或B。fail to do sth./沒(méi)有做。。；而再根據(jù)搭配句意判斷D最合適。
補(bǔ)充：
Failure n.失敗, 失敗的人, 故障, [美]不及格, 不履行; 疏忽
e.g. failure of electricity/ power failure停電
e.g. engine failure發(fā)動(dòng)機(jī)失靈
e.g. failure to keep a promise失約
A Nor have the middlemen
B to increase the prices for food
C that they cannot agree on the causes of the increase in prices
E by buying prepared food
F the popularization of convenience food
1. The farmers have not been benefited very much， __________.
分析：根據(jù)空格前句的句意和語(yǔ)法特點(diǎn)（nor與 not連用，引導(dǎo)出另一分句），判斷A正確。
補(bǔ)充：
Nor conj（與neither連用）也不; （與 not連用）也不；又不
e.g. Neither he nor his friends came back. 他和他的朋友都沒(méi)有回來(lái)。
e.g. I dont want to go, nor will I. 我不想去，也不會(huì)去。
B to increase the prices for food
C that they cannot agree on the causes of the increase in prices
E by buying prepared food
F the popularization of convenience food
2. Housewives have to pay for the time they save_____________.
分析：根據(jù)搭配句意選擇E（E作狀語(yǔ)）。
B to increase the prices for food
C that they cannot agree on the causes of the increase in prices
F the popularization of convenience food
3. The economists have come to the conclusion that the cause of increased food prices lies in ____________.
分析：根據(jù)語(yǔ)法：介詞后要跟名詞性結(jié)構(gòu)，不能直接跟從句結(jié)構(gòu)。因此F合適。
F the popularization of convenience food
5 Many people agree that food prices have increased sharply but they have failed _____
分析：直接根據(jù)搭配語(yǔ)法判斷答案可能出自D或B。fail to do sth./沒(méi)有做。。；而再根據(jù)搭配句意判斷D最合適。
補(bǔ)充：
Failure n.失敗, 失敗的人, 故障, [美]不及格, 不履行; 疏忽
e.g. failure of electricity/ power failure停電
e.g. engine failure發(fā)動(dòng)機(jī)失靈
e.g. failure to keep a promise失約
A Nor have the middlemen
B to increase the prices for food
C that they cannot agree on the causes of the increase in prices
E by buying prepared food
F the popularization of convenience food
1. The farmers have not been benefited very much， __________.
分析：根據(jù)空格前句的句意和語(yǔ)法特點(diǎn)（nor與 not連用，引導(dǎo)出另一分句），判斷A正確。
補(bǔ)充：
Nor conj（與neither連用）也不; （與 not連用）也不；又不
e.g. Neither he nor his friends came back. 他和他的朋友都沒(méi)有回來(lái)。
e.g. I dont want to go, nor will I. 我不想去，也不會(huì)去。
B to increase the prices for food
C that they cannot agree on the causes of the increase in prices
E by buying prepared food
F the popularization of convenience food
2. Housewives have to pay for the time they save_____________.
分析：根據(jù)搭配句意選擇E（E作狀語(yǔ)）。
B to increase the prices for food
C that they cannot agree on the causes of the increase in prices
F the popularization of convenience food
3. The economists have come to the conclusion that the cause of increased food prices lies in ____________.
分析：根據(jù)語(yǔ)法：介詞后要跟名詞性結(jié)構(gòu)，不能直接跟從句結(jié)構(gòu)。因此F合適。