C. Carbon dioxide D. Timber industry workers 34. What does the underlined word"This"in paragraph 4 refer to? A. The information of an early warning system B. The information on the absorption of carbon dioxide C The information of eco-physiological signals D. The information to the forest managers 35. what's the author's attitude towards the Tree Talker device? A Promising. B Alarming C Doubting D Understanding 第二节(共5小题;每小题2分,满分10分) 根据短文内容,从短文后的选项中选岀能填入空白处的最佳选项。选项中有两项为多余选项 The home humidity(湿度) is a measurement of the amount of vaporized(汽化了的) water in the air of the home. Humidity levels are naturally higher in warmer climates and lower in cooler climates Older and less energy efficient homes tend to have lower indoor humidity levels while modern homes with higher energy efficiency tend to have higher humidity level Both high and low home humidity levels can cause problems. Humidity levels that are too high can ffect paint and cause mold (4F E). humidity levels that are too low can cause cracks in your drywall and ffect furniture You may wonder what exact level of humidity you should have. Generally, people are most comfortable when home humidity is between 20 and 60 percent It can balance your need for comfort with the conditions that are less likely to damage your house It doesn't require expensive equipment. Just drop three ice cubes into a glass, add water, shake it and wait for three minutes; if moisture(ki) does not form on the outside of the glass, you may need to increase humidity. On the other hand, if you notice frequent fogging of your windows, you may have too much humidity in your home Daily activities like cooking can add water to the air in your home. If the home humidity level is top high, you can start cooking with pans covered If these basic changes don't help correct the problem, use a dehumidifier A. This is the ideal humidity level B. You must add water on a regular basis C. High humidity levels can damage furniture D. So do avoid too high and also too low humidity levels E Taking shorter showers may also control the humidity F Home humidity levels can be measured in simple ways G. The type of home can also affect the humidity measurements
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