单选题
By such demarcation, strong, representative national societies can then be left to do what they do best— ______ young scientists' development at national meetings, and represent their disciplines at the national level.(2009年北京航空航天大学考博试题)
【正确答案】
A
【答案解析】解析：四个选项的意思分别是：foster养育，促进；founder创立者；found建立，创办；foul堵塞，弄脏，根据句子意思可知，正确答案是A选项。如：Foster study and practice of creativity thinking ability of students in mathematics teaching．(在数学教学中培养学生创造性思维能力的研究与实践。)