According to Paragraph 2, people went on strike because ______.
A. the government refused to raise their salary
B. local unions" demand of wage rise was not met
C. unions and schools could not reach agreements
D. the nation could not set a standard for the provinces
在TCP/IP中，负责将IP地址映像成所对应的物理地址的协议是()
According to Paragraph 5, raising some cuckoo chicks in the nest will ______.
A. draw enemies to it
B. attract birds of prey
C. have no benefit at all
D. protect it from predators
We can learn from Paragraph 4 that______.
A. ships without crew will soon replace traditional ones
B. most air crashes are caused by operational mistakes
C. erewless ships are favoured just because of safety
D. human hands are more reliable than computers
微信支付 
支付宝支付