单选题 The question was how to maintain this kind of ______ for a vehicle that weighs considerably more than 3,000 pounds.

单选题 He entered the film industry, taking small roles and writing ______ for a famous film company.

单选题 Doctors continue their ______ duty to protect and save the lives of the patients.

单选题 The young man, who was very tall, was a ______ figure among all the other men, most of whom were short.

单选题 A recent Chinese cultural exhibition this summer has got ______ in the richness of traditional Chinese music and dance.

单选题 They are able to take ______ ideas, thoughts and generalizations and weave them into meaningful patterns.

单选题 They needed someone to ______ for a pianist who couldn’t make it, and her professor recommended her.

单选题 The Chinese scientist has finally won ______ within the international peer community for his science research.