可能是结节性淋巴细胞为主型霍奇金淋巴瘤的癌前病变是()
A.反应性滤泡增生
B.生发中心进行性转化
C.嗜酸性淋巴肉芽肿
D.皮病性淋巴结病
E.结节病
参考答案:B
On May 12, 2008, southwestern China was hit by an 8.0 Richter scale earthquake, from _____ effects the people are still suffering.
A.that
B.whose
C.those
D.what
简述作物抗寒性的自我调节。