单项选择题A．She was asked to lead a group of inexperienced cavers there.B．It was the first cave that she had ever visited.C．Clearly marked trails made it easy to explore.D．She hoped to make a discovery.

单项选择题A．Factors that affect the ability to memorize.B．The influence of childhood memories on adulthood.C．A proposal for future psychological research.D．Benefits of a busy lifestyle.

单项选择题A．Decide for himself what is best.B．Communicate his career hopes.C．Stop hindering his own progress.D．Look for another career.

单项选择题A．A consensus must be taken quickly before tomorrow’s decision.B．The emergency meeting can wait till tomorrow.C．The meeting is to be held off until tomorrow.D．There’ll be a decision tomorrow.

单项选择题As an increasing number of traffic regulation schemes are devised, a ______ driver finds himself diverted and forced into one-way systems which cause even greater delays than the traffic jams they are supposed to prevent.

单项选择题This process of elaborating a concept and moving toward empirical indicators is the crucial step in ______ analysis.

单项选择题This latest outbreak of violence is a clear ______ of discontent in the city.

单项选择题The results showed that attractive males utterly defeated unattractive men, but the women who had been ranked most attractive ______ received the fewest votes.

单项选择题The workers' promised wage increase is being ______ while it is examined by the government to see if it is greater than the law allows.

单项选择题As intriguing as these results are, much remains unclear about the impact of low doses of a low doses of alcohol ______ system.