32The fire in the chemical factory set off a series of powerful ________that killed hundreds of people.
(A) exploration
(B) explosion
(C) exclusion
(D) combination

28Many western countries consider a close embrace and kiss a normal greeting, whereas greetings in other countries may not__________ touching at all. (A) acquaint (B) undermine(C) outlaw (D) involve

29After Mr. Cooper resigns, Virginia will _______as the department manager. (A) hunt   for (B) take   over(C) turn   off (D) wrap  up

30After a severe heart attack, the politician abandoned his____________ to run for the position of prime minister. (A) adoption (B) ambition (C) demotion (D) detention

31Many workers complained that their supervisors didn’t know how to __________them to do their best work. (A) motivate (B) comply (C) ignore (D) announce

33“Keep your gun___________ , Kenny,” said the other cowboy, “because those horse-thieves will be back soon. ” (A) away (B) handy (C) distant(D) blurry

34If you are overweight, you should ___________fatty food from your diet. (A) shudder(B) suffocate(C) eliminate(D) enlighten

35 Queen Elizabeth II, who has been on the__________ for more than six decades, is the UK’s longest-serving monarch. (A) gospel (B) pledge (C) shrine (D) throne

36What is the best title for this passage?(A) Annoying Problems with Living and Traveling in RVs. (B) Advantages of Traveling in RVs and Purchase Considerations. (C) Desirable Ways of Covering Expenses for RV Drivers. (D) A New Coronavirus Disease Driving More People to Own RVs.

37Which of the following statements is true according to this passage? (A) Very few recreational vehicles provide bedding, cookware, and furniture even today. (B) Covering various expenses is one of the major issues for recreational vehicle travelers. (C)Traveling in recreational vehicles has contributed to the rise of a new coronavirus disease. (D) Part-time recreational vehicle travelers are free to go over budget when they start a journey.

38What does the phrase “biting off more than what you can chew” in the passage most likely mean? (A)Talking about something embarrassing. (B) Thinking twice before doing something. (C) Taking an extra job to get more income. (D) Trying to do something beyond one’s capacity.