关于失眠错误的是()。
A.入睡困难
B.睡眠维持困难
C.早醒
D.睡眠期间打呼噜
E.白天存在睡眠剥夺的表现
参考答案:D
读一读,判断正(T)误(F)。
Dear friend,
This is a photo of my family. I have one brother and one sister. My sister Rachel is older than me. She is
heavier, too. My brother Jim is 8 years younger than me. He is only 4 years old and he is shorter than me. My
mom is one year older than my dad and she is shorter, too.
Love, Jenny
( ) 1. Jenny has two brothers.
( ) 2. Rachel is heavier than Jenny.
( ) 3. Jim is shorter than Jenny.
( ) 4. Jenny is 12 years old.
( ) 5. Jenny's mom is younger than her dad.
图中能表明投资者通过贷出无风险资产,购买风险组合M的是:()。
A.(A) 位于f与M之间的组合
B.(B) 位于fM的右上延长线上的组合
C.(C) 位于f的右下延长线上的组合
D.(D) 位于fM连线上的所有组合