37. According to this passage, which of the following is true?
(A) If myelin cannot reproduce, our nerves cannot function normally.
(B) Aging of the brain cells is a natural process, which cannot be reversed.
(C) Older brain cells cannot function normally because of the soft environment.
(D) How brain stem cells age has little relation with the treatment for MS.

複選題33.(AB)Before jumping into decision, male your doctor clearly explain the possible risk factors. (AC)To make yourself more attractive by means of plastic surgery is to help restore your own confidence. (AD)After all, beauty is only skin deep. (AE)For many people, it doesn’t make any sense. (BC)First, if you are one of those who want to try cosmetic surgery, then you have to know your surgeon well. (BD)However, the American Society of Plastic Surgeons

複選題34.(AB)Before jumping into decision, male your doctor clearly explain the possible risk factors. (AC)To make yourself more attractive by means of plastic surgery is to help restore your own confidence. (AD)After all, beauty is only skin deep. (AE)For many people, it doesn’t make any sense. (BC)First, if you are one of those who want to try cosmetic surgery, then you have to know your surgeon well. (BD)However, the American Society of Plastic Surgeons

複選題35. (AB)Before jumping into decision, male your doctor clearly explain the possible risk factors. (AC)To make yourself more attractive by means of plastic surgery is to help restore your own confidence. (AD)After all, beauty is only skin deep. (AE)For many people, it doesn’t make any sense. (BC)First, if you are one of those who want to try cosmetic surgery, then you have to know your surgeon well. (BD)However, the American Society of Plastic Surgeons

36. What is the main purpose of this research? (A) To investigate how myelin is function in MS. (B) To learn more about the origin of the gene, Piezol. (C) To know more about oligodendrocyte progenitor cells (OPCs). (D) To understand more about the disease, multiple sclerosis (MS).

38. Multiple sclerosis (MS) is a disease in nervous system. What is harmed in it? (A) OPCs (B) Piezol (C) Myelin (D) Brain stem cells

39. Which of the following is true about Piezol? (A) Piezol lets out a chemical to help brain cells grow and regenerate. (B) Piezol rubs out the surface of brain cells and gets them younger. (C) Piezol is a special chemical that gives signals to brain cells. (D) Piezol is a kind of protein that can detect the brain stiffness or softness.

40. What is mainly discussed in the essay regarding cocoa beans? (A) The ups and downs of the production of cocoa beans. (B) Their role in the daily transaction for the ancient native Americans. (C) Medical breakthrough with the aid of chocolate. (D) Profitable business of growing chocolate beans.

41. Which of the following statements is true? (A) The value of cocoa beans results from the belief associated with holy spirits. (B) Value of cocoa beans was later standardized due to notorious defrauding. (C) It is the Aztecs that invented the transaction system with cocoa beans. (D) Cocoa beans used to be a widely recognized currency in South America.

42. What might the author continue to discuss in the follow-up paragraph? (A) The new leaf of the chocolate business for South American countries. (B) Discovery of the great profits generated from the use of cocoa beans. (C) The development of a modern variation of cocoa beans as currency. (D) How chocolate leads to severe moodiness and even depression.

43. What can be implied by the fact that cocoa beans were targeted by counterfeiting? (A) The hollow structure of the beans can be hardly found in most plant species. (B) Traditional transaction systems were pulled down by greedy businessmen. (C) The value of cocoa beans has been through tremendous rise and plunge. (D) They were widely recognized by the public as a mainstream currency.