商品经济
参考答案:
商品经济又称交换经济,这是指生产以生产为直接目的社会经济形式。
某不孕患者B超提示卵巢多囊状,需进一步检查()
A.宫腔镜
B.B超
C.腹腔镜
D.妇科内分泌检查
E.子宫输卵管通液或造影
—I have difficulty learning English_______.
—You may read after the tapes or ask the teacher for help. [ ]
A. grammar
B. pronunciation
C. rules
D. books