Nimotuzumab
DrugDrug: Nimotuzumab Experimental: Nimotuzumab arm Induction chemotherapy:Nimotuzumab 200mg will be given weekly for 6 cycles, started on day 1 of induction chemotherapy.
Concurrent chemotherapy: Nimotuzumab 200mg/week in concurrent with IMRT. Adjuvant therapy: Nimotuzumab (200mg ) will be given every 3 weeks for 8 cycles.
Active Comparator: Control Nimotuzumab 200mg/week in concurrent with IMRT .
Other names: h-R3, BIOMAb EGFR