The housewives are worthy of praise as their work is _________ . A: ambitious B: rigorous C: tedious D: courageous

Engineering and technology are disciplines ________ from one another and from science. A: distinct B: extreme C: rigorous D: extinct

The cultural exchange between China and other countries is more ________ than before. A: vagarious B: vicarious C: rigorous D: vigorous

Many citizens appealed to the city government for enacting ______ laws to protect the consumers. A: rigorous B: equivocal C: C. stringent D: furtive

Which of the following is NOT a basic element of business letters?（ ） A: rigorous words B: the stress on specifications C: explicit tones D: the use of formulas

There is a general belief that social science is _________ (quality) and therefore not rigorous. However, this may not be true since social scientists also employ rigorous thinking in their research.

She made a quick and ___________ examination of the typewriter without any intention of giving a hand in repairing. A: instrumental B: rigorous C: superficial D: intensive

He has been hoping for a raise for the last four months but his boss is_____to give him one. A: shrewd B: reluctant C: sceptic D: rigorous

Which of the following is an example of an efficient manufacturing technique? A: cutting inventory levels B: increasing the amount of time to manufacture products C: increasing product reject rates D: meeting customers' rigorous demand

Which of the following statements is TRUE? A: Dietary supplements don’t require rigorous testing as drugs do. B: Other studies find certain other supplements are beneficial. C: Millions of Americans are convinced of the report’s findings. D: The leading trade association said the study was unbiased.