—Shall I go over to chat with you this evening?

—Nice of you! It is       great comfort to keep me         company, when I’m alone at home．

A．a：the

B．a；不填

C．不填；a

D．不填；不填

单纯性甲状腺肿伴声音嘶哑的原因是()

A．缺碘所致

B．压迫声带所致

C．压迫喉返神经所致

D．转移所致

E．甲减所致