---It’s said that scientists are working hard to a way to deal with H7N9 avian influenza(

问题补充：

---It’s said that scientists are working hard to a way to deal with H7N9 avian influenza(H7N9禽流感)

---Really? That’s great!

A. caught up with

B. come up with

C. agreed with

D. compared with

答案：

A. caught up with

(答案→)B. come up with

C. agreed with

D. compared with

解析：句意：——据说科学家正在努力想出一个对付H7N9禽流感的方法？——真的吗？那太棒了！A. caught up with 赶上； B. come up with 想出，提出； C. agreed with 与……一致； D. compared with与……做比较。根据a way to deal with H7N9 avian influenza可知此处是想出一个抗击禽流感的方法。故选B。