1. The company has experienced a number of significant changes in the last few years.
a) influenced c) required
b) undergone d) implemented
2. You should speak more loudly and more slowly when you want to emphasize an important point.
a) introduce c) discover
b) stress d) report
3. The North Americans consume more energy and resources than any other nation.
a) use c) waste
b) generate d) apply
4. One of the most important skills to learn is how to utilize your time effectively.
a) take notice of c) take care of
b) pay attention to d) make use of
5. The outcome of the experiment was a complete surprise to everyone.
a) beginning c) result
b) conclusion d) launch
6. He is a pleasant colleague, and very proficient at his job.
a) skilled c) productive
b) profitable d) active
7. They alleged that they had been the first to discover those facts.
a) proposed c) stated
b) explained d) demonstrated
8. The theory proved to be valid and was a major breakthrough in the history of science.
a) true c) unique
b) valuable d) false
9. Communication between researchers is dependent on precise definition of concepts and ideas.
a) faulty c) accurate
b) broad d) standard
10. The results obtained signify that we still know very little about these phenomena.
a) convince c) guarantee
b) disprove d) indicate