禽肉的结缔组织不如畜肉的结缔组织发达。
参考答案：对
When the earthquake happened in Yushu, Qinghai, many _____ and doctors went there to save lives. [ ]
A. soldiers
B. soldier
C. old people
D. friend
1，52，313，174，()
A.5
B.515
C.525
D.545
