肘关节提携角为（）
A.20°～25°
B.16°～20°
C.10°～15°
D.5°～10°
E.1°～5°
参考答案：C
You were working too hard. You'd better keep a ________between work and relaxation.[ ]
A. promise
B. lead
C. balance
D. diary
以下哪一项不属于培根提出的“四假象说”（）。
A、种族假象
B、生活假象
C、洞穴假象
D、剧场假象
