下列成体结构与咽囊演变无关的是（）
A.胸腺上皮细胞
B.甲状旁腺
C.咽鼓管
D.甲状腺
E.腭扁桃体隐窝
参考答案：D
如果代数式3x-8y的值为2010，那么代数式2（x+6y）-8（x-y）-4-4y的值为______．
Miss Joanna,________ with the ______ result of the experiment, sat on the chair, smiling.
A．satisfying; excited
B．satisfied; exciting
C．satisfied; excited
D．satisfying; exciting
