One of the four underlined parts marked A, B, C, D in each sentence is not correct in standard English. Define them. 31.If a crisis would occur (A) , those unfamiliar (B) with the procedures (C) would not know how to handle (D) the situation. 32.Weather is the transitory (A) expression of climate (B) that must change greatly (C) from day to day or from season to season (D) . 33.Calculus was invented (A) to deal with (B) problems that could not be solving (C) using algebra (D) or geometry. 34.Yogurt contains (A) a higher percentage (B) of lactic acid than others (C) fermented milks, and it is rich in (D) B-complex vitamins. 35.They played (A) so good game (B) last night that (C) they surprised their (D) audience. 36.Stone tools began to be replaced (A) around 6,000 years ago (B) by metal tools, that were (C) used to build instruments (D) and simple machines. 37.One of (A) the most famous structures in the world (B) , the Statue of Liberty, is widely (C) considered a inspiring symbol (D) of hope and freedom. 38.Regional geography examines, on a regional basis (A) , the ways in which (B) the people local (C) interact with the environment (D) of the area where they live. 39.Beneath (A) the surface of the ocean there lies (B) a hidden world inhabit by plants (C) and animals we rarely see (D) . 40.It was after shortly (A) microscopes were introduced (B) at the beginning of the 17th century that microorganisms (C) were actually (D) sighted.