The money I got from teaching on the side was a useful_________

单选题 The money I got from teaching on the side was a useful__________to my ordinary income．

A．Profit
B．supplement
C．subsidy
D．replacement

参考答案B

解析: 教书的money肯定是日常income的“补充”。作者的副业当教书匠弄一点点外快，答案是B。可能错误选择C选项subsidy“补贴”，这是正当职业的“津贴”。我在外面捞的外快(the money)对我的普通收入(ordinary income)是一个补充。

单选题 Chinese people are now enjoying better dental health，as shown by the Declinin9__________of tooth decay．

A．Treatment
B．incidence
C．consequence
D．misfortune

单选题 Many countries have conservation programs to prevent certain__________0f fish from　becoming extinct．

A．Species
B．Sources
C．numbers
D．members

单选题 Susan never took any cookery courses．she learned cooking by__________useful tips from TV cookery programs．

A．picking up
B．bringing up
C．putting up
D．pulling up