在对显微镜下看到的变形虫的特点的描述不准确的是[ ]

A．呈半透明状          

B．半流动的胶状  

C．细胞内没有食物泡    

D．伸出伪足运动

John doesn’t work hard at his lesson and feels really nervous with the final exam _________.

A．approached

B．to be approached

C．being approached

D．approaching