(2013·宝鸡中学月考)The Australian boy has a good ________ of Chinese and can express himself freely in it.
A.power B.command
C.demand D.usage
(2013·开封一模)—How can I use the equipment?
—Well, just refer to the ________.
A.directions B.explanations
C.expressions D.introductions
(2013·黄冈3月质检)—Do you know why Jane was so angry?
—Her roommate gave in to ________ and opened the letter addressed to her.
A.curiosity B.consideration
C.concern D.convenience
(2013·宝鸡二检)In my brother's absence, I would like to thank all concerned on his ________.
A.behalf B.part C.business D.interest
(2013·福建毕业班质量检查)—What does PM 2.5 mean?
—It's a professional ________ indicating the condition of air pollution.
A.term B.item C.number D.mark
It is no ________ pretending you did not know because everyone saw the whole accident.
A.use B.help C.time D.joke