根据“中国居民平衡膳食宝塔”，一般健康成年人每日摄入油脂总量不应超过
A．5g
B．10g
C．15g
D．20g
E．25g
参考答案：E
No matter how frequently _____, the works of Beethoven always attract large audiences. [ ]
A. being performed
B. to be performed
C. performed
D. performing
精神分裂症有关神经生化病理假说中较引人重视的是
A．5-羟色胺假说
B．去甲肾上腺素来假说
C．多巴胺活动过多假说
D．甲基转移假说
E．血小板MAO的活动降低假说
