爱华网佳中
This enables the occeans to absorb and store vast quantities of heat, __________
often preventing climatic extremes.
[A] only [B] therefore
[C] thus [D] however
【答案】 C
【题意】 这使海洋能吸收和储存大量的热量,因此经常防止出现酷冷酷热的气候。
本题测特殊句型结构。两个句子如果是因果关系，常用 thus、 therefore、 hence、consequently、 as a result 等承联，此时两个句子的主语为不同的主语。如果两个句子的主语为同一主语，可用thus / thereby ＋ －ing （现在分词）引导短语，作结果状语，前面句子表示原因，后面的分词短语表示是结果。
例句：
1）More and more women are continuing to work after marriage, thus remaining
financially independent of their hu sbands.
越来越多的妇女结婚后继续工作，这样经济上仍可独立于他们的丈夫。
2）Recently we have employed a new technique in the production, thus reducing
the cost.
最近我们在生产中采用了一项新技术，降低了生产成本。
3）Agriculture has developed rapidly, thus providing light industry with ample
raw materials.
农业迅速发展, 从而为轻工业提供了充足的原料。
4）The economy is bad right now, thereby dropping the value of my portfolio.
现在经济不景气，因而降低了我的证券投资的价值。
5）In this way, advertising enhances information flows between traders，thereby
strengthens competitive market forces.
这样，广告增进了交易人之间的信息交流，由此加强了市场的竞争力。
6）The rivet contracts as it cools, thereby drawing the plates together.
铆钉冷却后会收缩，因而将板块紧固在一起。
7）Innovation and improvement in these industries will also lead to better service
delivery and greater consumer choice, thereby promoting growth and
creating new jobs.
这些行业本身不断创新，努力求进，亦有助改善服务，为消费者提供更多选择，
从而推动行业的发展，创造更多就业机会。
