重度驾驶疲劳的外表征兆有（）。
A.眼睛发涩
B.心跳加快
C.浑身发颤
参考答案：B, C
I would rather watch TV at home than hang out.
A．I want to hang out instead of watching TV at home.
B．I like watching TV at home better than hanging out.
C．I prefer watching TV to hanging out.
D．I prefer to watch TV at home than hanging out.
奥巴马是美国历史上第（）届总统。
A.42
B.43
C.44
D.45
