39
(A)improved 
(B)evacuated  
(C)resolved 
(D)vindicated 

35 The instant gratification of a photo posted to the Web that can get immediate approval from your followers has a downside. (A)If the number of your followers goes down after you post an instant photo onto the Web, you will immediately know that you are not popular. (B)Even if you are pleased with the approval you get from your followers, there is still a negative aspect. (C)The disadvantage of posting your photo to the Web is that you become so happy that you forget to express your gratitude to your followers who like your photo. (D)If you do not get instant approval from your followers about the photo you posted to the Web, you will tell right away that the number of your followers decline.

36 (A)spontaneous (B)technical (C) momentous (D) recording 

37 (A)merciful (B)memorable  (C)unwanted (D) unforgiving 

38 (A)grammatically  (B)clumsily (C) phonetically  (D)spaciously

40 (A)accountable (B)audacious   (C)inaudible (D)inevitable 

41 According to this article, what is damaging to the sewer pipe’s fabric? (A)hydrogen sulphide  (B)bacteria (C)sulphuric acid  (D)sticking plasters 

42 Which of the following statements is true? (A)The underground sewers have saved more lives than any medical procedure. (B)Many old sewers have been neglected and are in dire need of repair. (C)Dr. Hernandez and his colleagues made cultures from the mixture of bacteria found in sewer pipes. (D)The DNA screening of the samples was focused on bacteria only.

43 What did Dr. Hernandez and his team look for to detect signs of trouble in sewers ? (A)hydrogen(B) hydrogen sulphide  (C)carbon dioxide (D) hydrogen dioxide 

44 Which of the following statements about bacteria in sewer pipes is true? (A)They are of one species. (B)They could all be cultured. (C)They have undergone mass DNA screening in Dr. Hernandez’ experiment. (D)They helped reduce sulphuric acid in sewer pipes.

45 Which of the following statements about sewer pipes is true? (A)They are a product of the 20th century. (B)The acidity of the sewage does no damage to the pipes. (C)They are underground. (D)Their repair always comes in time.