患者女，53岁。咳嗽、咳痰1年余，伴体重下降12~13kg。既往左侧乳腺癌行手术治疗3年，术后病理为 * * 状导管癌，术后三苯氧胺治疗8个月。有粉尘接触史4~5年。常规胸部CT提示右中叶小结节，0.6cm×0.6cm，纵隔见小淋巴结。
下一步应采取的治疗方案是（）（提示：患者拒绝外科手术及有创检查，胸部CT随诊病灶渐增大，最大直径达4cm，伴右肺门及纵隔淋巴结明显肿大，且并发上腔静脉阻塞综合征。）
A.外科手术切除
B.支气管镜明确病理类型后行全身化疗
C.局部放射治疗
D.姑息治疗及中药治疗
E.靶向治疗
参考答案：B
以下是课程(CLASS)表和教师(INSTRUCTOR)表中的数据：
| CLASS | |||
| CLASS_ID | CLASS_NAME | HOURS_CREDIT | INSTRUCTOR_ID |
| 1 | Introduction to Accounting | 3 | 4 |
| 2 | Computer Basics | 3 | 1 |
| 3 | Tax Accounting Principles | 3 | 4 |
| 4 | American History | 3 | 2 |
| 5 | Basic Engineering | 3 | |
| INSTRUCTOR | ||
| INSTRUCTOR_ID | LAST_NAME | FIRST_NAME |
| 1 | Chao | Ling |
| 2 | Vanderbilt | Herbert |
| 3 | Wigley | Martha |
| 4 | Page | Albert |
A．SELECT i.last_name, i.first_name, c.class_name
FROM instructor i, class c;
B．SELECT i.last name, i.first_name,c.class_name
FROM class c LEFT OUTER JOIN instructor I
ON (i.instructor_id=c.instructor_id)
ORDER BY i.instructor_id;
C．SELECT i.last_name, i.first_name, c.class_name
FROM instructor i, class c
WHERE i.instructor_id=c.instructor_id (+)
ORDER BY i.instructor_id;
D．SELECT i.last_name, i.first_name, c.class_name
FROM instructor i LEFT OUTER JOIN class c
ON (i.instructor id=c.instructor_id)
ORDER BY i.instructor_id;
E．SELECT i.last_name, i.first_name, c.class_name
FROM instructor i, class c
WHERE i.instructor_id (+)=c.instructor_id
ORDER BY i.instructor_id;
F．SELECT i.last_name, i.first_name, c.class_name
FROM instructor i NATURAL JOIN class c
ON (i.instructor_id=c.instructor_id);