问题
选择题
| Lucy has a great sense of humor and always keeps her colleagues _____ with her stories. |
| A. amused B. amusing C. to amuse D. to be amused |
答案
答案：A
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| Lucy has a great sense of humor and always keeps her colleagues _____ with her stories. |
| A. amused B. amusing C. to amuse D. to be amused |
答案：A
用如图所示装置进行下列实验，实验结果与预测的现象不一致的是
| ①中的物质 | ②中的物质 | 预测①的现象 | |
| A | KI溶液 | 浓硝酸 | 溶液变蓝色 |
| B | 酚酞溶液 | 浓氨水 | 无色变红色 |
| C | NaAlO2溶液 | 浓盐酸 | 有白色沉淀 |
| D | 湿润红布条 | 饱和氯水 | 红布条褪色 |