A low iq indicates innovation destined to underachieve .
低iq表明创新注定无法实现期望。
A comparative research on the effectiveness of three different remedial instructions used in primary mathematics underachieve student .
三种不同补救教学方式对国小数学科低成就学生实施成效之比较研究。
In recent years , development economists have sought to explain why some countries lift themselves out of poverty while others chronically underachieve .