【单选题】What has the woman been doing now?
A.
She's been talking about her work experience.
B.
She's been worried about language barriers.
C.
She's been applying for a new job.
D.
She's been reading the man's personal statement.
【单选题】萃取精馏塔萃取剂的用量增加会降低级效率,一般萃取剂摩尔分数控制在( )。
【单选题】提供能够满足同一种需求的不同产品竞争者属于:()
【单选题】在本馆范围内,打开设备上的 WLAN 连接,根据你所在楼层,搜索相应的无线网络名称,输入密码( ),即可无线上网。
【单选题】— Mum, what's happened?—______ a fire in town.
【单选题】Look! The house's ________ fire. Let's get some help.
【单选题】下列各项中,有权对违反《会计法》行为实施处罚的机关是()
【单选题】No wonder he looks tired! He's been studying for the exams all week, ____ he's been working in a bar at night. [ ]
【单选题】Where had John’s father been?
B.
He had been to the hairdresser's.
【单选题】提供能够满足同一种需求的不同产品竞争者属于:( )