3. When a thirsty traveler sees a non-existing pool of water in the desert, he is having an optical ____________.
(A) allusion
(B) illusion
(C) elusion
(D) delusion

49 Adding electronic entertainment devices to a vehicle is a formula for disaster in driving safety. (A) Adding electronic entertainment devices to a car is very likely to lead to auto accidents. (B) Drivers are easily distracted by electronic entertainment devices which are formulaic. (C) We should add electronic entertainment devices to a car for the sake of driving safety. (D) The more electronic entertainment devices are added to a car, the fewer auto accidents will occur.

50 When Mary was 45, her eye doctor told her that she had to get____ eyeglasses so that she could see clearly both near and far. (A) bifocal (B) binocular (C) bilingual (D) bilateral

1. The plane developed engine trouble shortly after take-off and had to make an emergency ____________. (A) landing (B) helping (C) waiting (D) boarding

2. To the great ____________ of many readers, a considerable portion of the space in any newspaper is occupied by advertisements. (A) hindrance (B) ignorance (C) negligence (D) annoyance

4. It was so dark that we could only see the ____________ of the mountains against the sky. (A) statue (B) measure (C) outline (D) impact

5. David spent all his money on his new apartment; he had no more for the ____________ of a new car. (A) devotion (B) account (C) source (D) purchase

6. The archeologist had bad luck after he opened the tomb. He received the mummy’s ____________. (A) curse (B) omen (C) fame (D) belief

7. Now that Jack enjoys the English class, his scores are ____________ every week. (A) saving (B) reducing (C) accepting (D) improving

8. Bill Gates almost has a ____________ on computer operating systems. Most people use Windows on their computer. (A) revenue (B) monopoly (C) bankrupt (D) deposit

9. I don’t have enough ____________ with me. Can I pay by credit card? (A) message (B) cash (C) receipt (D) password