下列哪项不是肝阳上亢所致眩晕主症:
A.眩晕耳鸣,头痛且胀
B.急躁易怒,面红口苦
C.心中懊恼,发热汗出
D.舌红苔黄,脉弦
E.耳鸣如轰,头胀口苦
参考答案:C
Mary looks worried, because one of her pets is . [ ]
A. missing
B. miss
C. missed
D. misses
简述镁砖的特性和用途。