纵隔肿瘤中无钙化征像的为下述哪项()
A．支气管囊肿
B．胸内甲状腺肿
C．神经源性肿瘤
D．畸胎类肿瘤
E．胸腺瘤
参考答案：A
The police are looking for the witnesses,__________ words will make a difference to the victim.
A．whose
B．which
C．where
D．when
某不法商人为了牟取暴利，先将商品提价200%，再打六折出售，这个商人可赚取______%的利润．
