单项选择题
It was suggested that （） big event like the Year of Russia in China should certainly benefit （） relationship between the two countries.
A. a; the B. the; a C. a; / D. the; /
单项选择题 The doctor tried to do an experiment to find out the （） of the medicine on the mice.
单项选择题 This is only one of the laundries in the district （） modem equipment.
