In the clause …floods and drought are hurting crops and therefore raised corn and soybean prices, the action of hurting is the cause and the action raised is the result.
However, note that the action of hurting is in present progressive tense and hence, means that it is an ongoing action, while the verb raised is in simple past tense. This is illogical since result cannot precede the cause. Therefore, we have a verb tense error in this sentence.
定位不准确，不要往后定位，就在 deregulation of the airline出现那句话的中间changes that included dramatic growth in the corporate demand for travel services, as well as extensive restructuring and consolidation within the travel industry。选择最重合的选项E。
C是在后面的解决globalization dilemma 的方法，并不是deregulation of the airlines 的effect
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BD 区别evidence和conclusion evidence是具体的事件 conclusion是一个statement一个评价一个状态