军事五项世界锦标赛包含哪五项比赛项目？
参考答案：
射击，500米障碍跑，500米障碍游泳比赛，投弹，越野跑。
用动词的正确形式填空。
1. She _____ (do) her homework last night.
2. We (be)at home last Sunday.
3. I will (meet) my friend tomorrow.
4. He is going to _____ (take) some photos.
5. Look! Daming ____ (talk) on the phone.
设备零部件连接螺栓（）和地脚螺栓（），由岗位（操作工）检查、紧固和更换。
