【正文】 ed by how long its potency can be protected byA B C Dthe manufacturer39。s coating material. No errorE42. The primatologist has argued that sustained observation of a few animals provides better behavioral data than does intermittent observation of many animals.(A) provides better behavioral data than does intermittent observation of many animals(B) provides better behavioral data than many animals are observed intermittently(C) providing better behavioral data than does intermittent observation of many animals(D) do provide better behavioral data than intermittent observation of many animals do(E) in contrast to intermittent observation of many animals, provides better behavioral data43. Though heavily dependent on the government for business and information while universities supply the space research center with talent, as a corporation it remains independent of both.(A) information while universities supply the space research center with talent, as a corporation it remains(B) information and on talent by universities, the space research center, a corporation(C) information and on universities for talent, the space research center is a corporation(D) information, universities supply the space research center with talent, but it is a corporation (E) information, universities supply the space research center with talent, while it remains a corporation44. During the labor dispute, barrels of potatoes were emptied across the highway. and they thereby blocked it to all traffic.(A) highway, and they thereby blocked it to all traffic(B) highway and therefore blocking it to all traffic(C) highway, by which all traffic was therefore blocked(D) highway, and therefore this had all, traffic blocked(E) highway, thereby blocking all traffic45. John Edgar Wideman is regarded to be one of the most talented writers of the twentieth A Bcentury and is often pared to such literary giants as Ralph Ellison. and Richard Wright. C DNo errorE46. Something of a phenomenon in the entertainment world, political satirists are admired byA B C conservatives and radicals alike. No errorD E47. The Navajo migrated from Canada to the southwestern United States at the same time as the Apache and they speak an Apachean language.(A) The Navajo migrated from Canada to the southwestern United States at the same time as the Apache, and they(B) The Navajo, who migrated from Canada to the southwestern United States at the same time as the Apache,(C) Migrating from Canada to the southwestern United States at the same time were the Navajo and the Apache, and they(D) The Navajo migrated from Canada to the southwestern United States with the Apache and this is why they(E) A migration from Canada to the southwestern United States at the same time with the Apache, the Navajo48. At the heart of the program, enthusiastically endorsed by the city39。s business association, is A Bplans for refurbishing neighborhoods and for making lowinterest mortgages available to C Dyoung families. No errorE49. Arelia believes that cloth draped over hills is an art form that cannot last long enough as a work of art either to please or influence future generations.(A) cannot last long enough as a work of art either to please or influence future generations(B) cannot last long enough as a work of art, for ages to e neither pleasing or influencing future generations(C) is not a lasting work of art that for ages to e will either please or influence future generations(D) is not a lasting work of art that will remain for ages pleasing and influencing future generations(E) will not last long enough either to please or to influence future generations50. Today more and more women are being doctors, lawyers, engineers, chemists, or other professions.(A) or other professions(B) or they work in other professions(C) or at work in other professional fields(D) or professionals in other fields(E) or in other professional fields10