Were You A “学渣(xuézhā)” at School?

Nǐ xiāngxìn ma? Tom shàngxué de shíhou shì gè “xuézhā!” 你  相信     吗? Tom    上学       的   时候   是  个   “学渣”!

From the sentence above, we can know that: A. Tom often got excellent scores on exams when he was in school. B. Tom thought that …