29. People think it’s always warm and sunny in Portugal, _____ January and February are often cold, wet, and grey.
(A) unless
(B) so
(C) but
(D) thanks to

25. Away from the gorgeous regal halls _____ a dark, dreary cell, where the wind whistled through the iron bars. (A) was she led to (B) she was led to (C) led she was to (D) she led to

26. Robot-assisted surgery results in smaller scars, _____ hospital stays. (A) slightest pain, and short (B) less pain, and shorter (C) painless, and short (D) least pain, and shortest

27. “I’ve lost one of my gloves.” “You _____ it somewhere.” (A) must drop (B) must have dropped (C) must be dropping (D) must have been dropping

28. I had the biggest _____ on a pop singer when I was young. (A) crush (B) crushed (C) crushing (D) crushingly

30. _____ by a friend or a date? (A) Have you ever been stand up (B) Have you been stand up (C) Have you ever been stood up (D) Have you stood up ever been

31. The word “it” in the first line refers to _____. (A) all sciences (B) the representative theory of physics (C) to understand what Einstein found out (D) to describe everything in one set of equations

32. The word “invent” is closest in meaning to _____. (A) imitate (B) originate (C) duplicate (D) steal

33. Why does the author mention Einstein? (A) To disclose how he spent his last years. (B) To state that he also jokingly called it the TOE. (C) To imply that it is not at all an easy job to accomplish. (D) To help readers understand that it was not one of his ideas.

34. Which of the following is true about Edward Witten? (A) He invented the superstring theory. (B) He is perhaps the greatest chemist who ever lived. (C) He declared that the basic building blocks of nature were tiny particles. (D) He found that the strings existed in a strange 10-dimensional universe.

35. According to the passage, many young theorists are eager to study the math of superstring theories because _____. (A) their enthusiasm has been aroused by the work of Einstein (B) Witten found that the strings existed in a 10-dimensional universe (C) they are convinced that it is the path to ultimate truth (D) Witten became to be regarded as the most talented physicist when he chose to work in the field