马乙型脑炎是人畜共患的传染性疾病。
参考答案：对
钢索除两端拉紧外，跨距大的应在中间增加支持点，中间的支持点间距不应大于 16m。()
Mr.Jones didn’t ______during the flood,but she was very fightened.
A．give away
B．give out
C．give way
D．give off
