糖皮质激素对下列哪些因素引起的脑水肿有效
A.脑肿瘤
B.脑缺血
C.脑脓肿
D.颅内出血
E.脑外伤
参考答案：A, C, D
某导体两端的电压减小了10V时，通过此导体的电流减小了2A，则当导体两端的电压为20V时，通过导体的电流为多少？
Mo Yan has published dozens of novels, of ________ some are very popular among Chinese readers, Red Sorghum, for example.
A．those
B．whose
C．whom
D．which
