异形、槽生牙
A．鱼纲 B．两栖纲 C．爬行纲 D．鸟纲 E．哺乳纲
参考答案：E
The 3G cell-phone must be of great use to ______ wants to get the information through the Internet quickly.
A．who
B．whoever
C．whomever
D．whichever
