问题
不定项选择题
下列关于硫酸和盐酸的说法正确的是 [ ]
A.其浓溶液露置在空气中一段时间，质量都会减少
B.其稀溶液都能使紫色石蕊试液变红色
C.其稀溶液都可用于除去钢铁制品表面的铁锈
D.都能与Ba(NO3)2溶液反应生成白色沉淀
答案
BC
搜题请搜索小程序“爱下问搜题”
下列关于硫酸和盐酸的说法正确的是 [ ]
A.其浓溶液露置在空气中一段时间，质量都会减少
B.其稀溶液都能使紫色石蕊试液变红色
C.其稀溶液都可用于除去钢铁制品表面的铁锈
D.都能与Ba(NO3)2溶液反应生成白色沉淀
BC
| 阅读理解。 | |
| |
| 1. On Friday, the babysitter will _____. | |
| A. not work B. work three hours C. earn(挣钱)$10 D. 1ive in Shanghai | |
| 2. What is not part (部分)of the job? | |
| A. Cooking for the child. B. Working at the child's house. C. Reading books to the child. D. Taking care of the child. | |
| 3. The best babysitter for the job _______. | |
| A. cannot read story books B. is busy on Wednesday afternoon C. wants$1 5 per hour D. likes playing with children |