如图所示，一束光线通过某界面发生的反射和折射现象。由图可知反射光线是________；折射角是∠________。
OA；6
影响自我效能感形成的因素有( )。
A．个人自身行为的成败经验
B．替代经验
C．言语暗示
D．情绪唤醒
用所给词的适当形式填空。
1. There _____ (be) five chairs in the room.
2. How many _____ (office) are there in your school?
3. Are there _____ (some) flowers on Lily's desk?
4. They are in Class Two. _____ (they) English teacher is Miss Gao.
5. The tall _____ (build) is a bank.
