为使飞机在开始滑行时就有一定的初速度，航空母舰装有弹射装置，然后在飞机发动机产生动力作用下做匀加速直线运动最后起飞．某型号的飞机经弹射系统作用后，具有144km/h的初速度，但起飞的速度须达到180km/h．该飞机提供的牵引力为1.32×1⁵N，起飞质量为2.7×10⁴kg，若飞机在跑道上匀加速100m．

共有10处语言错误,每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改.

增加:在缺词处加一个漏字符号(~),并在其下面写出该加的词。

删除:把多余的词用斜线(/)划掉。

修改:在错的词下划一横线,并在该词下面写出修改后的词。

注意:1）每处错误及修改均仅限一词:

2）只允许修改10处,多者(从第11处起)不计分.

    My parents and I spent half a month in New York last year. We went to there in autumn. We think it is best season to visit America. The weather is usually cool or there aren't too many tourist in October. We stayed in a hotel in the center of the city. It was conveniently as we travelled most on foot. We couldn't understand the bus routes, and my parents didn't like travelled by underground. I went to look at the places that all tourists went to see. We went shopping in Times Square and spend too much money. What we liked most were going to the theater. We don't have the chance to see so wonderful plays at home.

 化学物质王国中举行节日游戏活动，游戏规则如图所示（图中“→”表示一步反应生成），以形成物质间相互转化的循环接龙．

请你将下列八位队员：①Ca（OH）₂ ②Cu ③CaO ④CO ⑤CaCl₂ ⑥CuO ⑦CO₂ ⑧CaCO₃平均分成红、蓝两队．游戏规定，物质⑤任红队的队长，物质⑦任蓝队的队长，且红、蓝两队的队长均处于甲的位置，两队分别形成循环接龙．

请回答：

（1）红队乙的化学式　____ ．

（2）红队中丙→丁的化学方程式为　____ 　．

（3）蓝队队员依甲乙丙丁的顺序排列是⑦　____ （填序号）．

如表记录了t℃的4份相同的硫酸铜溶液中加入的无水硫酸铜的质量以及析出的硫酸铜晶体（CuSO₄•5H₂O）的质量（温度保持不变）的空验数椐：

当加入6.2g无水硫酸铜时，析出硫酸铜晶体的质量（g）为（　　）