【名词&注释】
输尿管梗阻(ureteral obstruction)、体外受精(in vitro fertilization)、骨肉瘤(osteosarcoma)、恶性骨肿瘤(malignant bone tumor)、同源人工授精(artificial insemination by husband)、异源人工授精(artificial insemination by donor)、骨髓瘤肾(myeloma kidney)、无性生殖(asexual reproduction)
[单选题]目前,我国禁止的生殖技术是
A. 人工授精
B. 同源人工授精
C. 异源人工授精(artificial insemination by donor)
D. 无性生殖(asexual reproduction)
E. 体外受精