服务单位如需通过传真向航天信息相关部门反映技术问题，则应提交（）。
A、《问题报告单》
B、《技术支持申请单》
参考答案：A
虫证的治疗原则是（）
A.理气和胃，健脾益气
B.调和脾胃，清热解毒
C.疏肝理气，杀虫止痒
D.驱除虫体，健运脾胃
E.养阴清热，活血止痛
A beautiful picture ______ the students in class 7. [ ]
A. were shown
B. was shown
C. were shown to
D. was shown to
