上海证券交易所网络投票系统基于交易系统和互联网。( )
参考答案：错
解析：上海证券交易所网络投票系统基于交易系统。
Read and judge. 阅读短文，判断下列句子正(T)误(F)。
Hello, my name is Liu Fang. I am in Class 1, Grade 4. I am from Shanghai. Yang Ling is my good friend.
She is a girl. She is in Class 3, Grade 4. She is from Beijing.
( ) 1. Liu Fang is from Shijiazhuang.
( ) 2. Yang Ling is a girl.
( ) 3. Liu Fang is in Class 1, Grade 5.
( ) 4. Yang Ling is in Class 3, Grade 4.
套筒冠义齿的缺点不包括下述哪一项 （）
A.牙体磨切量大
B.反复取戴易造成外冠唇颊面颈缘瓷层损坏
C.制作复杂，要求精度高
D.内冠金属暴露影响美观
E.基牙受力方式不合理
