单项选择题
A．The man and woman shopped all over the town.
B．The woman bought some bookcases on sale.
C．The woman went to many different stores.
D．The man sold the woman some expensive bookcases.
单项选择题 承包商为赶工期，向水泥厂发函紧急订购500t某强度等级的水泥，要求三日内运送至工地，并要求当日承诺。承包商的订购行为（）。
单项选择题 W: Would you mind my visiting your class tomorrow morning, Professor Smith?M: No, not at all. But I don’t have classes tomorrow morning. Perhaps you can go to my class on Friday morning.Q: What do we learn from the conversation?（）
单项选择题 A．弥漫性甲状腺肿大伴有血管杂音 B．弥漫性甲状腺肿大伴有触痛C．甲状腺肿大、质硬，表面不光滑 D．放射性核素扫描为冷结节Graves病的典型体征