问题
选择题
下列有关实验基本操作和实验现象的描述正确的是（ ）
A．用托盘天平称取25.20 g氯化钠
B．配制一定浓度的氢氧化钠溶液时，将氢氧化钠固体放在纸片上称量
C．用玻璃棒蘸取溶液滴到湿润的pH试纸上,测其pH
D．把锌粒放入盛有盐酸的试管中，加入几滴氯化铜溶液，气泡放出速率加快
答案
答案：D
搜题请搜索小程序“爱下问搜题”
下列有关实验基本操作和实验现象的描述正确的是（ ）
A．用托盘天平称取25.20 g氯化钠
B．配制一定浓度的氢氧化钠溶液时，将氢氧化钠固体放在纸片上称量
C．用玻璃棒蘸取溶液滴到湿润的pH试纸上,测其pH
D．把锌粒放入盛有盐酸的试管中，加入几滴氯化铜溶液，气泡放出速率加快
答案：D
| 完形填空。 | ||||
| Foulsham House is a fine, large house of the 1790s. It __1__ by the River Byre, in twenty-five hectares of the best farmland in the southwest. The house __2__ by Smithson, and the story goes __3__ to George, the son of the King of Whales, who __4__ love with the beautiful lady Kitty, at one of the first Foulsham's wild woods parties. Many years ago many great men __5__ on the hills about Foulsham House, and many fine girls took tea in the Green Room. The house has eight bedrooms,three bathrooms, two living-rooms, and a dining-room __6__ a real dam fireplace. Its library has a good __7__ over the park and the river. __8__ rooms are light and airy, with good, high windows, and wood floors. At the back of the house there is __9__ for four cars. The third Foulsham once kept horses there. In many other ways, this house of the 1790s meets the __10__ 0f the 1990s. If you wish to know more about Foulsham House, write to: Harvey. Platt, Longford & Sons 6, Castle Green, Giliam, Byreside. | ||||
|