视网膜脱离一般不出现下列哪种症状或体征
A．眼压下降B．艮疼C．眼前黑影飘动D．闪光感E．视力降低
参考答案：B
333×3×11=______．
Why are you so anxious? It isn’t your problem _____.
A．on purpose
B．in all
C．on time
D．after all
