There ________ a pen and two books on the desk.[ ]
A. is
B. are
C. was
D. were
答案:A
六千七百四十五写作( )
在故障道口设置停车防护信号,白天防护杆上插红旗,夜间挂红灯,夜间及恶劣天气还应同时点燃火炬。()