Tham khảo tài liệu 'toefl stucture bank part 23', ngoại ngữ, toefl - ielts - toeic phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 9. One theory of the origin of the universe is-from the explosion of a tiny extremely dense fireball several billion years ago. A because what formed B the formation that c that it formed D when forming 10. Roads in the United States remained crude --with graved or wood planks until the beginning of the twentieth century. A were unsurefaced or they covered them B which unsureface or covered C unsurfaced or covered them D unsurfaced or covered 11. Portrait prints were the first reproductions of American paintings-widely distributed in the United States. A were B that which C that being D to be 12. Abigail Adams was prodigious letter writer -many editions of her letters have been published. A who B and C in addition to D due to 13. In geometry an ellipse may be defined as the locus of all points--distances from two fixed points is constant. A which as the sum of B of the sum which C the sum of whose D whose sum that the 14. ---at the site of a fort established by the Northwest Mounted Police Calgary is now one of Canada s fastest growing cities. A Built B It is built C To build d Having built 15. An image on a national flag can symbolize political ideals that----express. A take many words to otherwise would. B would take to many otherwise words C many words to take would otherwise D would otherwise take many words to A B C Wft 16. A variation of collodion photography was the tintype which captured images on a black or dark brown metal plate instead from on glass. 17. In cases of minor injury to the brain. Amnesia is likely to be a temporarily condition. 221 18. The system of chemical symbols first devised about 1800. gives a concise and instantly recognizable description of a element or compound. 19. The fact that white light is light composed of various wavelengths may be demonstrating by dispersing a beam of such light through a prism. 20. Over the course of history much civilizations developed their own Number systems. 21. In the United States during the Second .