还原8克氧化铜，至少需要标准状况下的氢气多少升？（标准状况下氢的密度是0.09克
题型：问答题
问题：
还原8克氧化铜，至少需要标准状况下的氢气多少升？（标准状况下氢的密度是0.09克/升）
题型：问答题
| 阅读理解。 | ||
physical contact. Eat Immune-Boosting Foods Keeping your body strong and ready to fight infection is important in flu prevention. Fatty foods can make you feel lazy, and make your immune system working in an inactive and compromised way. So stick with whole grains, colorful vegetables, and vitamin-rich fruits. Avoid Alcohol In addition to being a mood calm and pleasant, alcohol is an immune restriction that can actually decrease your resistance to virus infections like AH1N1 flu. So avoid alcohol to keep your immune system strong. Drink Enough Water Drink 8-10 glasses of water each day to wash out poisonous things from your system and maintain system in a good state. Keep Psychically Active Adequate exercise-for example walking for 30 to 40 minutes 3 or 4 times a week-supports the immune system by increasing circulation, speeding the body's oxygen-taking-in, taking away poisonous things through sweat, and releasing tension and stress. So get moving! Be Careful of Surfaces This is as much a mindfulness exercise as anything else. Be aware of what public surfaces you touch, when you've shaken hands with someone, or when you're using something like a pen that others have recently used-and don't touch your face until you've had a chance to wash your hands. Know When to Get Help AH1N1 flu can look like regular flu, so don't feel like you necessarily are infected if you're exhibiting flu-like symptoms. But do consult your doctor if your symptoms are severe. | ||
| 1. Which of the following pictures is talked about in the passage? | ||
[ ] | ||
A.  B.  C.  D.  | ||
| 2. How can fatty foods affect a person? | ||
[ ] | ||
| A. They cause human s immune system inactive B. They help to keep one's body strong C. They are good for fighting infection D. They are favorable for a calm mood | ||
| 3. Drinking water and having enough exercise play the similar role in _____. | ||
[ ] | ||
| A. increasing circulation B. taking in more oxygen C. cleaning your system D. reducing your pressure | ||
| 4. What does the author strongly suggest in the last paragraph? | ||
[ ] | ||
| A. Don't touch your face! B. Avoid using others' pen! C. Don't fear getting infected! D. See a doctor if you're seriously ill! |
