With the help of computers, people will find it easier to keep the traffic smoothly.
A:to run
B:run
C:running
D:are running
“丝绸之路”是联系中外的纽带,沟通东方和西方的桥梁,为它的开辟做出了突出贡献的历史人物是( )
用显微镜观察血涂片,在同一视野中所见到数目最多的细胞是( )