一眼呈视 * * 水肿,另一眼呈视神经萎缩,常因为()
A.一侧颞叶病变
B.一侧额叶底面的肿瘤
C.视交叉蛛网膜炎
D.颅内压增高
E.眶上裂附近的病变
参考答案:B
The more one is ________ the Englishspeaking environment, the better he or she will learn the language. [ ]
A. exposed to
B. filled in
C. caught on
D. kept up
商朝首都是哪里?