The overseas Chinese have _____great love for______ their motherland.
  A. a; the         B. an; /      C. the; /        D. a; /

 ______students in our school are mostly from_____ north．
  A. The; /         B. The; a     C．/; the        D. The; the

 We'll wait for you at the gate of ____school on _____National Day.
  A. the; the       B. the；/     C. a; /          D. a; a

 ______snow is white. The snow that covers the top of the mountain is _____ beautiful sight.
  A. The; the       B. /; /       C. /; a          D. /; the

 ______Einsteins did manage to send ______Einstein to a technical school.
  A. /;/            B. An; an     C. The; /        D. The; an

 The southerners usually have _____rice for_____ lunch.
  A. the；the       B. /; a       C. /; /          D. the;／

 A doctor told me to take ____medicine three times a day, stay in ___bed, then I would be better soon.
  A. a; the         B. a; /       C. the; /        D. /; a

 The teacher came into the classroom, ______dictionary under_____ arm.
  A. a; a           B. an; a      C. the; the      D./;/

 He takes___ active part in____ sports.
  A. the; the       B. the;/      C. an;/          D./;the

  Washoe is a young chimpanzee（黑猩猩）. She is no _41_ chimpanzee, though. Scientists are doing a research _2_ her. They want to see how civilized (驯化) she can _43_ . Already she does many things a human being can do.

     For example, she has been learning how to exchange _44_ with people. The scientists are teaching her _45_ language. When she wants to be picked _46_, Washoe points up with one finger. She rubs her teeth with her finger _47_ she wants to brush her teeth. This is done after every meal.

     Washoe has also been _48_ to think out and find answers to problems. Once she was put in a _49_ with food hanging from the ceiling. It was too high to _50_. After she considered the _51__, she got a tall box to stand _52_. The food was still too high to be reached. Washoe found a _53_ pole. Then she climbed onto the _54__, grasped the pole, and __55_ down the food with the pole.

     Washoe _56_ like a human, too. The scientists keep her in a fully furnished house. After a hard _57_ in the laboratory, she goes home. _58_ she plays with her toys. She _59_ enjoys watching television before going to bed.

Scientists hope to _60_ more about people by studying our closest relative (亲属)-chimpanzee. 

41. A. foolish                B. ordinary                          C. special              D. simple

42. A. for                            B. by                                 C. to                           D. on

43. A. experience            B. change                         C. develop            D. become

44. A. actions                      B. views                            C. messages                D. feeling

45. A. sign                          B. human                           C. spoken                   D. foreign

46. A. out                            B. at                                  C. on                          D. up

47. A. when                        B. until                               C. since                      D. while

48. A. raised                        B. trained                           C. ordered                   D. led

49. A. cave                          B. zoo                                C. room                D. museum

50. A. pull                           B. see                                C. eat                         D. reach

51. A. problem                 B. position                      C. food                   D. ceiling

52. A. by                         B. on                           C. up                    D. with

53. A. straight                B. strong                        C. long                   D. big

54. A. wall                       B. box                           C. ceiling                D. pole

55. A. knocked                 B. picked                        C. took                   D. shook

56. A. lives                      B. acts                          C. thinks                 D. plays

57. A. task                       B. lesson                        C. day                    D. time

58. A. Here                  B. There                         C. So                     D. Then

59. A. quite                  B. already                       C. even                   D. still

60. A. observe                 B. discover                       C. gain                   D. learn