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Part I Writing
The Importance of Keeping A Good Mood
In today‘s increasingly competitive world it is essential to maintain a positive attitude towards life. To put it in a metaphor， keeping a good mood is a foundation upon which our life is built.
Keeping a good mood is important because it can help us solve various problems in life. The following two situations can enable us to clearly see how a positive attitude helps us cope with unpleasant things. Take English learning for example. In our effort to grasp English， mistakes are unavoidable. From one perspective mistakes are annoying， but a positive attitude can make us realize that only through making mistakes can a learner be expected to make progress. Sometimes one may come down with a serious cold， feeling depressed. But a change in attitude will enable us to look at the matter from a positive perspective. The illness may teach us the importance of health.
As we can see， keeping a good mood can help us to deal with mistakes in the right way and find comfort in time of sorrow. Its importance cannot be denied.
Part II Reading Comprehension (Skimming and Scanning).
1. N 结合标题To Save Trees， Fighting One Alien Insect with Others迅速扫读全文可知，文章主要不是描写HWA这种虫害本身，而是如何防治这种虫害，故题干表述不正确。
2. Y 根据题干中的信息词hallmark和Appalachia‘s national parks定位原文，第三段明确指出The evergreen trees， a hallmark of southern Appalachia’s national parks.。.，可知题干表述正确。
3. Y 根据题干中的信息词HWA定位原文，第四段有Already the tiny bug from Japan， known as the hemlock woolly adelgid (HWA)。..，可知题干表述正确。
4. Y 题干中有acting quickly， 与一小标题同，估计答案在其下段落下。定位到第二段，发现题干是文中原句，故题干表述正确。
5. N 根据题干中的信息词An infected tree定位原文，在Acting Quickly下的倒数第二段段末有An infected tree usually dies within five years of initial attack，可知题干表述错误。
6. NG 文章后半部分讲到为了控制HWA，美国已在受灾部分地区投放HWA的天敌St bettles，但是在文章倒数第二段末尾指出这种方法是否有效还无法判断(too early to measure their impact)，故本题表述正确与否末可知。
7. N 在对抗HWA的方法中，文章着重介绍了引入其天敌来达到生态平衡的方法，且在Plans of Attack下的第四段段首有明确说明，故题干表述错误。
8. 15 U.S. states。根据题干中的信息词1951定位原文，在Acting Quickly下第一段可找到答案。
9. another type of infestation。读完原文，发现Risky Business下讲了用St bettles来控制HWA这种方法可能带来的风险，而题干正是谈的这种方法，定位Risky Business下的段落，首段即可找到答案。
10. keep HWA in check。最后一题多出现在文章末尾，根据题干中的信息词year-round定位Risky Busines下的段落，在第三段第一句可以找到答案。
Part IV Reading Comprehension (Reading in Depth)
Section A
47. very high
题目问飓风等自然灾害带来的损失情况如何。根据题干中的torrential rains， severe thunderstorms和tornadoes 可以定位到文章第一段，最后一句指出损失的总值是exceeded $250 million， 可见损失非常大，故得答案very high.
48. Because the available data are not detailed enough.
题目问传统的天气预报为何不能有效预报短期内天气的变化。由题干中的关键词conventional models of atmosphere 可以定位到第二段的开头，第一句话的后半句because the available weather data are generally not detailed enough直接给出了答案。
49. predicting general weather conditions over large regions
题目问传统的天气预报现在的主要用途。由题干中的关键词conventional models 定位到第二段。最后一句指出conventional forecasting models do a much better job predicting general weather conditions over large regions than.。.， 即：传统的方式现在主要是用来预测大范围内的总体天气情况。
50. Accurate， short-range forecasts.
题干明确定位了本题的答案(第三段)，第一句话就给出了解释：accurate， very short-range forecasts.
51. Computer programs and video equipment.
题目问什么使得Nowcasting 变成了现实。可以定位到文章的最后一句。..using these new technologies in weather forecasting offices， Nowcasting is becoming a reality， 可见是these new technologies 使得Nowcasting成为现实，而these new technologies指代的就是上句话中的computer programs and video equipment.
