统计人员应当（），恪守职业道德。
A．保守国家秘密统计资料
B．坚持实事求是
C．对统计对象的商业秘密和个人信息进行保密
D．认真做好本职工作
参考答案：B
选出与画线部分意思相或相近的选项。
1. —Where is he going?
—I don't know. [ ]
A. I've no idea
B. I can do nothing
C. I don't thank
D. I know it very well
2. More than ten new students will come to our school. [ ]
A. Over there
B. Over
C. Less than
D. Some
3. Yesterday I reached home very late.[ ]
A. arrived at
B. got
C. arrived in
D. back
4. There are a few oranges in the basket. [ ]
A. some
B. many
C. much
D. a lot of
5. He is a well-known actor. [ ]
A. good
B. outgoing
C. athletic
D. famous
男，60岁。左侧后牙自发痛2天。一年多来该侧后牙遇冷或热痛。2天前开始，夜痛不能入睡。查龋深，探敏感，叩痛(+)，不松动。冷测引起剧痛。
该患牙的诊断最可能是（）。
A．深龋
B．三叉神经痛
C．急性牙髓炎
D．可复性牙髓炎
E．慢性牙髓炎急性发作
龋深，探敏感，叩痛(+)，不松动。冷测引起剧痛。