— ____

— She is a nurse.

A. Who is your mother?

B. Is your mother a nurse?

C. Where is your mother?

D. What does your mother do?

甲状腺动脉有几条或几对，起源于哪两根血管分支()

A.2条；颈内动脉分支和锁骨下动脉分支 

B.2对；颈内动脉分支和锁骨下动脉分支 

C.4条；颈外动脉分支和锁骨下动脉分支 

D.4对；颈外动脉分支和锁骨下动脉分支 

E.5对；颈内动脉分支和颈外动脉分支