中国的传统节日有春节、元宵、清明、端午、中秋和（）。
A.寒食
B.七夕
C.重阳
D.国庆
参考答案：A, B, C
—May I speak to John?
---Sorry, he Japan. But he in two days.
A．has been to; will come back
B．has gone to; will come back
C．has been in; would come back
D．has gone to; come back
单纯性下肢静脉曲张的主要病因是
A．妊娠
B．动静脉瘘
C．深静脉受阻
D．静脉壁发育不良
E．腹内压增高
