人最原始（或基本）的情绪有快乐、________、________和恐惧。
参考答案：悲哀 愤怒
解析：一般认为，快乐、愤怒、恐惧和悲哀是四种最基本的情绪。
Though Jenny is the only child in the big family, she is never _______ about what to eat or what to wear.[ ]
A. cautious
B. particular
C. considerate
D. positive
一氧化碳中毒的特征性表现是
A．头晕头痛
B．恶心呕吐
C．四肢无力
D．皮肤樱红
E．意识模糊
