单项选择题 定级因素分级以4~8个级别为宜。( )

多项选择题 依据《建设项目竣工环境保护验收技术规范生态影响类》，下列（）行业属《建设项目竣工环境保护验收技术规范一生态影响类》的适用范围。

单项选择题 听力原文： President Clinton has proposed a 31 billion-dollar-plan to make college education more affordable for millions of American families. Mr. Clinton' s proposal calls for tax deductions and tax credits to ease educational costs for families making up to 120,000 dollars a year. The program is to be fully implemented by the year 2003. The plan also includes 35 million dollars for a program to encourage former students to complete their college degrees. Another 1. 1 billion dollars has been earmarked for education programs aimed at ethnic minorities and lower-income families.______ will benefit from the 35 million-dollar program.A．Ethnic minoritiesB．Lower-income familiesC．Former college studentsD．African American families