物理气相沉积简称（）。
A.LVD
B.PED
C.CVD
D.PVD
参考答案：D
The little girl stood there, not knowing what to do, ________ by what she had seen. [ ]
A. terrified
B. terrifying
C. being terrified
D. was terrified
下列（）不属于研究微观粒子的工具
A、对撞机
B、加速器
C、显微镜
D、探测器
