动脉导管未闭患儿适宜手术的年龄为()
A.1~2岁
B.1~3岁
C.1~4岁
D.1~5岁
E.1~6岁
参考答案:E
—What's up? You look at me ________?
—Guess! I have something ________ to tell you! [ ]
A. happily, happy
B. happy, happily
C. happy, happy
D. happily, happily
试比较五种常见运输方式的特点及适用范围。