第部分：概括大意与完成句子（第～题，每题分，共分）
阅读下面这篇短文，短文后有项测试任务：（）第～题要求从所给的个选项中为第、、、段每段选择个正确的小标题；（）第～题要求从所给的个选项中选择个正确选项，分别完成每个句子。请将答案涂在答题卡相应的位置上。
（龙卷风）
（不可预知）（性别歧视的）
2. Hurricanes and typhoons（台风）
3. Hurricanes get their power from water vapor as it gives out its stored-up energy. All water vapor gives out heat as it condenses（凝结）（赤道）
4. Scientists have determined that the heat given out in the process of water condensation can be as high as 95 billion kilowatts per hour. In just one day alone, the storm can produce more energy than many industrialized nations need in an entire year! The problem is that we don't know how to make such great energy work for us.
5. Predicting the path of a hurricane is one of the most difficult tasks for forecasters. It moves at a typical speed of 15 mph. But not always. Some storms may race along at twice this speed, then suddenly stop and remain in the same location in the ocean for several days. It can be maddening（发疯的）
6. The biggest advance in early detection is continuous watch from weather satellites. With these, we can see the storms form and track them fully, from birth to death. While they can still kill people and destroy property, hurricanes will never surprise any nation again.
答案：23．24．．26．27．28．．30．
