钢化玻璃是用普通平板玻璃或磨光玻璃经加热与淬火制成的，具有抗弯曲和耐冲击的特点。
参考答案：对
During the first year in the university, students always talk about the teachers and the things ________ they remembered in high school.[ ]
A. who
B. which
C. that
D. what
对青霉素过敏患者的革兰阴性菌感染宜选用( )。
A．头孢唑林B．头孢他定C．克拉维酸D．氨曲南E．拉氧头孢
