大学英语六级改革适用（阅读）模拟试卷723
词汇理解
The idea of taxing things that are bad for society has a powerful allure. It offers the possibility of a double benefit—【C1】________harmful activities, while also providing the government with revenue.
Take sin taxes. Taxes on alcohol make it more expensive to get drunk, which reduces excessive drinking and【C2】________driving. At the same time, they provide state and local governments with billions of dollars of revenue. Tobacco taxes, which generate more than twice as much, have proven【C3】________in the decline of smoking, which has saved millions of lives.
Taxes can also be an important tool for environmental protection, and many economists say taxing carbon would be the best way to reduce greenhouse gas emissions. Economic theory says that unlike income or sales taxes, carbon taxes can actually increase economic efficiency; because companies that【C4】________carbon dioxide into the sky don\’t pay the costs of the climate change they cause, carbon taxes would restore the proper【C5】________to the market.
In reality, carbon taxes alone won\’t be enough to halt global warming, but they would be a useful part of any climate plan. What\’s more, the revenue from this tax, which would【C6】________be hundreds of billions of dollars per year, could be handed out to citizens as a【C7】________or used to fund green infrastructure projects.
Similarly, a wealth tax has been put forward as a way to reduce inequality while raising revenue. The revenue from this tax, which some experts【C8】________will be over $4 trillion per decade, would be designated for housing, child care, health care and other government benefits. If you believe, as many do, that wealth inequality is【C9】________bad, then these taxes improve society while also【C10】________government coffers (金库).
A) discouraging F) imprisoned K) merging
B) dividend G) incentives L) predict
C) emotional H) inherently M) probably
D) fragments I) initially N) pump
E) impaired J) instrumental O) swelling
1.【C1】
A
解析：空格前为名词benefit以及破折号，空格后为harmful activities，后面while also提示空格处应为动名词形式(v-ing)。由句意可知，空格处的动词应与“使沮丧”表意相近。动词中只有A项discouraging“使沮丧”符合句意。故本题选A。
2.【C2】
E
解析：空格前为并列连词and，空格后为名词driving，因此空格处应为形容词(a.)，与前面的excessive并列。由句意可知，空格处的词汇应与“危险的，醉酒的”表意相近。只有E项impaled“有……障碍的”能够和driving构成impaired driving，意为“危险驾驶”，符合句意。故本题选E。
3.【C3】
J
解析：空格前为系动词proven，空格后为介词in，因此空格处应为名词(n.)或形容词(a.)，构成系表结构。由句意可知，空格处的词汇应与“关键的，重要的”表意相近。只有J项instrumental“起重要作用的”符合句意。故本题选J。
4.【C4】
N
解析：空格前为关系代词that引导定语从句，空格后为名词carbon dioxide，因此空格处应为动词(v.)。由句意可知，空格处的动词应与“排放，排出”表意相近。动词中只有N项Pump“用泵输送”能够和后文的into构成符合文意的搭配。故本题选N。
5.【C5】
G
解析：空格前为形容词proper，空格后为to，空格所在句有谓语，缺少宾语，因此空格处应为名词(n.)。由句意可知，空格处的名词应与“促进，激励”表意相近。名词中只有G项incentives“激励，鼓励”符合句意。故本题选G。
6.【C6】
M
解析：空格前为情态动词would，空格后为be，因此空格处应为副词(ad.)。由句意可知，空格处的副词应与“可能，大概”表意相近。副词中只有M项probably“可能”符合句意。故本题选M。
7.【C7】
B
解析：空格前为不定冠词a，空格后为连词or，因此空格处应为单数名词(n.)。由句意可知，空格处的名词应与“利益，好处”表意相近。名词中只有B项dividend“奖金，红利”符合句意。故本题选B。
8.【C8】
L
解析：空格所在句是一个which引导的定语从句，定语从句的主干为which will be…per-decade，其中some experts________为插入语，插入语中缺少谓语，因此空格处应为动词E项。由句意可知，空格处的动词应与“预测，预估”表意
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