“三通”密切了海峡两岸经贸往来。潍坊为海峡两岸企业界沟通搭建的平台是[ ]
A、国际风筝会
B、蔬菜科技博览会
C、技术交易会
D、鲁台经贸洽谈会
答案：D
温抗体型自身免疫性溶血性贫血其抗体主要是（）
A.IgG
B.IgC
C.IgA
D.IgM
E.IgB
______ the teacher has given permission, ______allowed to use the equipment in the lab.
A．Only if, are the students
B．If only, the students are
C．If only, are the students
D．Only if the students are
