题目

已知a为ⅡA族元素，b为ⅢA族元素，它们的原子序数分别为m和n，且a、b为同一周期元素，下列关系错误的是     （      ） A. n=m+10                      B. n=m+11          C. n=m+25                      D. n=m+1 答案：A                               B     Because he wrote his name so that it could be read easily, John Hancock has a place in the dictionary.     John Hancock was a wealthy man who helped the patriots in the American Revolution. He was president of the Continental Congress. He was also governor of Massachusetts and one of the first men of sign the Declaration of Independence. Yet he is remembered best for his large signature.     The story is told that when Hancock sat down to sign the Declaration of Independence, he said that he would write his signature large enough for John Bull to read without his glasses. Hancock’s signature on the Declaration is four the three-quarter inches long—an inch longer than his usual signature.     Today John Hancock can be used to mean any person’s signature. 60. The passage is mainly about        .     A. the American Revolution          B. John Hancock’s handwriting     C. how an American expression began     D. signing the Declaration of Independence 61. Hancock is remembered best because he        .     A. was governor of Massachusetts     B. helped the patriots in the Revolution     C. signed his name in large letters     D. was president of the Continental Congress 62. John Bull is        .     A. another name for Uncle Sam       B. England’s Uncle Sam     C. a name that stands for England   D. both B and C 63. According to the dictionary, a John Hancock is a        .     A. governor                         B. man who sign petitions     C. strong patriot                   D. person’s signature