| 托福考试易错题（2017/9/9） |
| 第1题： Chromosomes are regarded today as the major carriers of genetic material, （） of DNA and various types of protein. A. consisting B. as to consist C. consist D. which consisting |
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| 第2题：（）, domesticated grapes grow in clusters, range in color from pale green to black, and contain sugar in varying quantities. A. Their botanical classification as berries B. Although their botanical classification as berries C. Because berries being their botanical classification D. Classified botanically as berries |
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| 第3题： Navigators on ships and aircraft use a compass to determine （） they are heading. A. the direction in which B. to where the direction C. that direction of which D. where the direction |
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| 第4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5题： All the major cities of the United States, （）_ the cities of the Great Lakes and the Gulf of Mexico, began as centers of trade. A. and to include B. which including C. included D. including |
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