有关口腔的描述，正确的是()
A．向后经咽峡与咽相通
B．底为舌
C．顶为腭
D．两侧为颊
E．前为上、下牙弓
参考答案：A, C, D
benign childhood epilepsy with centro-temporal spikes
In fact, the house as well as his two cars ______ him all the money he earned during the 20 years．
A．has been cost
B．have cost
C．has cost
D．have been cost
