颈中部，舌骨下方，随吞咽上下移动的肿物可能是
A．颏下皮样囊肿
B．鳃源性囊肿
C．甲状腺舌管囊肿
D．颌下腺囊肿
E．皮脂腺囊肿
参考答案：C
The new group of students is better-behaved than the other group who stayed here __________.
A．early
B．earlier
C．earliest
D．the earliest
轮生枝
