Mức TOEFL bài học 13- Level TOEFL lesson 13

Level TOEFL lesson 13 1. It has been estimated that ________ one hundred thousand men participated in the gold rush of 1898. C (A) approximate (B) until (C) as many as (D) more 2. A seventeen-year-old is not ________ to vote in an election. A (A) old enough (B) as old enough (C) enough old (D) enough as old 3. As soon as ________ with an acid, salt, and sometimes water, is formed. B (A) a base will react (B) a base reacts (C) a base is reacting (D) the reaction of a base 4. The Ford Theater where Lincoln was shot ________. C (A) must restore (B) must be restoring (C) must have been restored (D) must restored 5. The skiers would rather________ through the mountains than go by bus. C (A) to travel on train (B) traveled by train (C) travel by train (D) traveling by the train 6. He has received several scholarships ________ C (A) not only because of his artistic but his academic ability (B) for both his academic ability as well as his artistic (C) because of his academic and the artistic ability (D) as a resulting of his ability in the art and the academy 7. The doctor insisted that his patient ________ B (A) that he not work too hard for three months (B) take it easy for three months (C) taking it easy inside of three months (D) to take some vacations for three months 8. Legumes take nitrogen into their roots ________ the air. D (A) except (B) however (C) but (D) from 9. So little ________ that he failed the examination. A (A) did the student know (B) the student knew (C) the student had known (D) knew the student 10. The belief in life after death is prevalent in both primitive societies ________ advanced cultures. A (A) and (B) and in (C) and also (D) also 11. Copper is the favored metal for electricians’ wire because of ________. B (A) it is an excellent conductor (B) its excellent conductivity (C) excellent conductivity of it (D) so conductive is it 12. Before the Angles and the Saxons ________ to England, the Iberians had lived there. C (A) coming (B) come (C) came (D) did come 13. A college bookstore that sells used textbooks stocks ________ along with the new ones on the shelf under the course title. D (A) its (B) their (C) a (D) them 14. ________ discovery of insulin, it was not possible to treat diabetes. A (A) Prior to the (B) Prior (C) The prior (D) To prior 15. Out of John Kenneth Galbraith’s The Affluent Society ________ for an increase in public goods, potentially at the expense of private goods. A (A) came the argument (B) his argument (C) argued (D) the economist is arguing 16. The human body has four jugular veins, ________ each side of the neck. D (A) there are two on (B) it has two on (C) two are on (D) two on 17. When ________ of impulses from many of the neurons in one part of the brain, an epileptic seizure occurs. C (A) the simultaneous bursts (B) simultaneously burst (C) there are simultaneous bursts (D) simultaneously bursting 18. Aspirin is used ________ a constriction of the blood vessels. B (A) the counteraction (B) to counteract (C) counteract (D) counteracting 19. ________ gene in the human genome were more completely understood, many human diseases could be cured or prevented. C (A) Each (B) Since each (C) If each (D) Were each 20. Only after food has been dried or canned ________. C (A) that it should be stored for later consumption (B) should be stored for later consumption (C) should it be stored for later consumption (D) it should be stored for later consumption