【简答题】II. Cloze Test. (完形填空) (15%) Jackson and Thomas were good friends. They always 1 each other. One evening, Jackson said to his wife, “Thomas got married last month. I’d like to give 2 to him in his kit...
【多选题】在实际工作中,当总体规模较大时,一般不直接采用简单随机抽样,原因是( )。
【简答题】Child mortality (死亡率) decreased due to improvements in medical care and greater attention to problems related to proper ________.(gigantic; standpoint; evacuate; naïve; permeate; nutrition; inflict; s...
【简答题】Fill in the blanks with the words or expressions given in the box below. Change the form where necessary. foreign exchange rank set up financial gear up signific...
【单选题】I _______rather have taken his advice. He is the last person who will betray you in the world.
【简答题】先将总体划分成若干群,然后以群作为抽样单位从中随机抽取部分群,再对抽中的各个群中所包含的所有元素进行观察。该抽样方法为( )。
【简答题】Mr. Evens works in Sydney. Last week he had a two weeks’ holiday, but he didn’t know where to go. He said to his friend Robert, “I hate the hot weather here, but I can’t find a cool place in Australia...
【简答题】Task 1 Read the passage, think about the following 5 questions and complete the answers. 1) What will the writer do with the experiences he got from different people on his journey? He will __________...
【单选题】“从含有N个个体的总体中抽取n个个体,使包含有n个个体的所有可能的组合被抽取的可能都相等”的抽样方法称为()。
【简答题】Child mortality decreased due to improvements in medical care and greater attention to problems related to proper _______. 由于医疗保健的改善和对适当营养问题的更多关注,儿童死亡率下降。