下列实验操作、现象与实验结论一致的是（ ）。
| 选项 | 实验操作、现象 | 实验结论 |
| A | 将FeCl3溶液分别滴入NaBr、NaI溶液中，再分别滴加CCl4，振荡，静置 | 氧化性：Fe3＋＞Br2＞I2 |
| B | 除锈的铁钉在浓硝酸中浸泡后，用蒸馏水洗净，再放入CuSO4溶液中无现象 | 铁钉表面形成了一层致密稳定的氧化膜 |
| C | 向某溶液中加入Ba（NO3）2溶液，生成白色沉淀，加稀盐酸沉淀不消失 | 该溶液中有SO42- |
| D | 甲苯中滴入少量浓溴水，振荡，静置，溴水层褪色 | 萃取了浓溴水中的溴 |
BD
选项A不能比较Br2与I2的氧化性强弱；选项C不能确定是SO42-，因为SO32-或SiO32-也可能出现题述现象。
Chinese space lover Wang Yuan has been chosen as one of the volunteers for the Mars-500 test project. 小题1: Another five volunteers are all space . They are three Russians, an Italy-Colombian and a Frenchman. They will feel what it's like to travel to Mars without leaving the earth. During the whole process (过程), they are locked up for one and a half years under the condition which is similar to the red planet. So the experiment is called Mare-500. 小题2: Although the volunteers won't leave the building, they will feel as if(好像) they are on a real trip to Mars. The most difficult thing is that they will be separated from he people outside. 小题3: That will be hard. When reporters asked what they would miss most during the 500-day special life, Charles from France said, "For me, it will be mainly my family, the sun and fresh air." The main task is to study "Man and Environment". It will care about the astronauts' physical effects and the experience of staying there. 小题4: So they will have to make decisions by themselves and then report to the earth, and the earth will tell them whether they do the right thing or not. Each astronaut is preparing for the great challenge. And people are looking forward to the result of the experiment.
小题5:According to the passage, which of the following is TRUE?
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