.智力测试（IQ）:

66.     What is the next number? 65536,256,16,___________________________.

67.     What question can never be answered被回答by用“yes”? ______________

68.     What always goes up上升and never goes down下降?_________________

69.     What must you do before you return a book to the library?________________

70.     What would be the next group of letters?aaaa…bdzb…cgac…djzd…????.________________