【判断题】由于总体是唯一确定的,根据总体计算的总体参数也是唯一确定的,只不过通常是未知的。
【简答题】听对话,回答问题。 1. How many kilos of apples does the woman want to buy? A. Four kilos. B. A kilo. C. Half a kilo. 2. When does the class begin? A. At 6: 45 a.m. B. At 7: 00 a.m. C. At 7: 15 a.m. 3. How far ...
【简答题】听下面5个小对话,每个对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项。 1. How many kilos of paper garbage does Bob have? A. 45 kilos. B. 25 kilos. C. 15 kilos 2. What does the man do to save water? A. To take short showers. B. ...
【单选题】How many kilos does the woman want for the mutton?