| 托福考试易错题（2017/9/27） |
| 第1题： by the United States government’s Bureau of Labor Statistics, the Consumer Price Index compares current costs of goods and services with past costs. A. To prepare B. As it prepared C. When preparation D. Prepared |
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| 第2题：The introduction of mass-production methods enabled many people （） and gave them an unprecedented amount of mobility. A. to purchase their own automobiles B. their own to purchase automobiles C. to their own purchase automobiles D. own their automobiles to purchase |
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| 第3题：Because of （） diversity, seven separate groupings or divisions of algae have been established by botanists. A. them B. so that C. those D. their |
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| 第4题：A social system is （） of social relations that draws the behavior of its members toward the core values of the group. A. a complex network B. how a complex network C. a complex network and D. a network that is complex |
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| 第5题：When （） to dough and heated, carbon dioxide is released, causing the dough to rise. A. is added baking powder B. added baking powder is C. is baking powder added D. baking powder is added |
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