题目

I work as the reception manager at my hotel.A(n) ____ came in a few weeks ago with a note attached that the guest would be travelling with her ____ father.Just so that we would be aware when ____ with them when they arrived as his daughter wanted to make his trip to Ireland as ____ as possible.Upon seeing this note and noting I would be the one to ____ them in，I decided to learn some basic ____ language.I greeted the guest in my usual way，____ for the surname on the booking.Once I heard the name I ____ immediately who was standing in front of me.I had been learning for over two ____ how to12．实验室利用反应所得CuSO4、稀H2SO4混合液制备CuSO4•5H2O，其主要流程如下：（1）试剂X应选用b（选填序号）．a．Cu      b．CuO             c．Fe写出混合液中加入过量X后发生的反应方程式CuO+H2SO4=CuSO4+H2O．（2）操作A中，所用玻璃仪器有漏斗、玻璃棒、烧杯．（3）操作B为蒸发浓缩、降温结晶（或冷却结晶或冷却热饱和溶液）、过滤．（4）操作C为洗涤、低温干燥，其中洗涤剂不可选用a（选填序号）．a．热水    b．冰水    c．饱和CuSO4溶液．