用下表三台显微镜（编号为A、B、C）分别观察同一装片的洋葱表皮细胞．请回答下列问题：

小萱想利用一块电流表和阻值已知的电阻R₀测量未知电阻R_X的阻值。小萱选择了满足实验要求的实验器材，并连接了部分实验电路，如图所示。

已知A是一种气态烃．完全燃烧时产生的水和二氧化碳的物质的量之比为1：1．A的相对分子质量小于30．在下图变化中，中间产物C跟葡萄糖一样也能和新制的氢氧化铜反应生成砖红色沉淀．（反应条件未写出）

又知2CH₃CHO+O₂2CH₃COOH．请回答下列问题：

文中共有10处语言错误，每句中最多有两处。

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: 1）每处错误及其修改均仅限一词；

2）只修改10处，多者（从第11处起）不计分。

    It was 6 pm when we arrived Belfast, so we went straight to the hotel that we booked online to check in after we got on the plane. On our way to the downtown, the taxi driver brief introduced the city, which had been in chaos for almost 30 years until the end of next century. After dropped our bags, we wandered around in the streets. The city was peacefully and people seemed to be enjoying their life very much. The place that we had our dinner was called “The Crown”, a pub dated back to 1826, when the first train ran from Belfast to Lisburn. We met two European girls having Chow Mein, fried noodles, when we were having a rest in the hall of the hotel later. They told us they have bought the noodles in a Chinese restaurant named Eastern Land. We decided not to go there the next evening so that we could taste it.