判断题：钢材接头双面搭接焊接的长度不应少于10d，单面焊缝的长度不应小于10d。A．正确B．错误

[完型填空] Nora was sixteen years old. She had a little brother. His brother...

天宫一号从结构上分为两部分，分别是（）。A．驾驶舱和生活舱B．资源舱和实验舱C．固定舱和活动舱

[ 完型填空] Fruit is good for people. Many people eat some （ 1 ） every day. ...

[词汇与结构]—I prefer classic music_____pop music.A than B on C with D to

[阅读理解]Martin Luther King was a black minister, who became a great leader of...