题型:问答题 —It’s our duty to homeless people in earthquake areas food and clothes.—I agree with you. We should do something for them.A. provide, of B. provide , with C. provide , for 查看答案
题型:问答题 (2002,21)申请专利的发明创造在申请日以前6个月内,如果该发明创造的内容( ),则丧失新颖性。A.在中国政府主办或承认的各级展览会上首次展出的B.在规定的学术会议上首次发表的C.在国外杂志上发表过D. 他人未经申请人同意而泄露其内容的 查看答案