Neil seemed very calm, yet Celia was still aware of his panic _______ the surface.
A：beneath
B：over
C：beyond
D：from
7.9÷0.3____7.9
7.9÷1.3____7.9
1.What are your best ____(祝愿)?
2.Their ____ (工作) are standing and watching at the door.
3.My friends are coming ____(不久).
4.He____ (听) to the teachers carefully in class.
5.My friend ____(写信) to me three times a month.
函数fx=exlnx在点1,f1处的切线方程是（ ）
