在颌面骨结构中惟一能活动的骨是
A．上颌骨B．下颌骨C．颧骨D．泪骨E．犁骨
参考答案：B
连词成句。
1. ate, and, egg, Sam, an, hamburgers, two (.)
2. likes, very, brother, sandwiches, my, much (.)
3. sausages, we, them, to, gave (.)
4. did, drink, what, you, yesterday (?)
5. is, cook, Mum, going, to, meat, us, for, tonight (. )
石决明的药用部位是（）
A．卵鞘
B．贝壳
C．雌虫干燥体
D．干燥内壳
E．背甲
