阅读训练

Reading Comprehension (Reading in Depth)

With the world’s population estimated to grow from six to nine billion by 2050, researchers, businesses and governments are already dealing with the impact this increase will have on everything from food and water to infrastructure an jobs. Underlying all this 47________ will be the demand for energy, which is expected to double over the next 40 years.
Finding the resources to meet this demand in a 48________, sustainable way is the cornerstone of our nation’s energy security, and will be one of the major 49________ of the 21st century. Alternative forms of energy --- bio-fuels, wind and solar, to name a few --- are 50________ being funded and developed, and will play a growing 51________ in the world’s energy supply. But experts say that, even when 52________, alternative energy sources will likely meet only about 30% of the world’s energy needs by 2050.
For example, even with 53________ investments, such as the $93 million for wind energy development 54________ in the American Recovery and Reinvestment Act, important alternative energy sources such as wind and bio-fuels 55________ only about 1% of the market today.
Energy and sustainability experts say the answer to our future energy needs will likely come from a lot of 56________ --- both traditional and alternative.

A stable B solutions C significant D role E progress
F marvelous G included H growth I exactly J consist
K comprise L competitions M combined N challenges O certainly
参考答案

【讲解答案】

　　47. 【解析】[D] feel是一个系动词，可以判断此处应填入一个形容词，通过上下文意思，以及后面介词about, 可以确定选项为D项guilty, 短语feel guilty about sth. “对……感到有愧”。全句的意思为“我们很爱吃，但是往往在吃完之后又有负罪感”。
　　48.【解析】[M] be obsessed with 为固定搭配，原意为“被……附上/缠住/迷住心窍”，放在本句表示“十分重视”。全句的意思为“我们很重视健康和减肥，但肥胖却又空前地在蔓延”。
　　49.【解析】[A]本句缺一个名词作主语，并且根据和介词to的搭配，可以推断出正确选项answer。
　　50.【解析】[I]本句根据more和ways可以判断出需要填入一个形容词构成比较级，根据上下文，表示“旨在禁止酗酒的禁酒令，却激发了更多新奇的方法来酗酒”，可以确定I为正确选项。
　　51. 【解析】[F]本题较难。根据be 和by 确定应填入一个过去分词。再根据上下文，上文表示“应该吃典型的美国人吃的食物”，下文通过 but 转折，表示实际上“美国的食物已经被诸如比萨和热狗这样的舶来品所诠释了”，因此可以确定F为正确选项。
　　52.【解析】[B]政治结果，可根据宗教原因religious reasons来推断此处填政治结果。
　　53.【解析】[L]由于横线后面没有宾语，可以确定不是形成bring的短语，这样本句所缺的为一名词，作bring的宾语。根据下文解释，“美国人对他们所吃的食物的态度是矛盾的”，可以推出本句意思为“坚定的观点也不是确定不变的”。因此可以确定L为正确选项。
　　54.【解析】[K]系动词become后应填入一个形容词，和后面介词of形成短语be/become suspicious of “对……感到怀疑”。
　　55.【解析】[J]本句缺一个名词作主语，并且根据和介词in的搭配，可以推断出正确选项belief，(have)belief in sth。“ 相信……”。
　　56.【解析】[C]本句是一般现在时，缺一个动词，且和with 搭配，确定选项share, share sth. with sb., “与某人分享某事”。