热狗(香肠面包)。have sb.do sth."让某人干某事"。

　　3．I'd prefer to ________ my judgement until I find all the evidence.

　　A．assess B．express

　　C．pass D．reserve

　　解析：选D。考查动词辨析。assess"评估"；express"表达"；pass"通过，经过"；reserve"推迟，留到以后"。根据状语从句until I find all the evidence 可知，此处应用reserve表示"我暂时不想作出判断"。句意：我暂时不想作出判断，直到我找到所有的证据。故选D项。

　　4．With international ________ and education exchanges increasing every year, the number of Chinese students studying abroad has increased rapidly.

　　A．cooperation B．competition

　　C．construction D．conflict

　　解析：选A。考查名词辨析。句意：随着国际合作与教育交流每年在增加，在国外学习的中国学生的数量在快速增长。cooperation"合作"；competition"竞争"；construction"建设"；conflict"矛盾"。

　　5．- What do you think of investing in today's stock market?

　　- There are many risks, but also many ________ gains.

　　A．potential B．confidential

　　C．influential D．preferential

　　解析：选A。考查形容词辨析。句意："你如何看待今天的股市投资？""有许多风险，但也有许多潜在的收益。"potential"潜在的，可能的"；confidential"秘密的，表示信任的"；influential"有影响的，有权势的"；preferential"优待的，优先的"。

　　6．Sometimes the police are not absolutely sure that someone has committed a crime, but ________ him of having done it.

　　A．charge B．suspect

　　C．inspect D．doubt

　　解析：选B。考查动词辨析。charge sb.with sth."指控某人犯有某种罪行"；suspect sb.of sth."认为某人有......的嫌疑"；inspect"视察，检查"；doubt"怀疑"。

　　7．His comments were deeply offensive ________ a large number of single mothers.

A．for B．to