第5题: [单项选择]大鼠致畸试验中,给母鼠染毒的时间为()。 A. 孕0~5天 B. 孕5~10天 C. 孕6~15天 D. 孕16~20天 E. 孕0~20天 参考答案:C 答案解析:大鼠致畸试验是对大鼠在器官形成期染毒,大鼠的器官形成期在母鼠受孕后的6~15天,所以给母鼠染毒的时间为孕6~15天。
第7题: [单项选择]A. It is wanted by many people. B. It still has some candy left over. C. It isn’t working right now. D. It is moved out of the hall. 参考答案:C 答案解析:[解析] M: Is there a candy machine in this building I want to get some for my nephew. W: Oh,
第8题: [单项选择]施工机械使用费的索赔不包括( )。 A. 由于完成额外工作增加的机械使用费 B. 非承包商责任工效降低增加的机械使用费 C. 由于业主或监理工程师原因导致机械停工的窝工费 D. 由于索赔事项材料实际用量超过计划用量而增加的材料费 参考答案:D
第21题: [单项选择]{{B}}Passage One
Questions 26 to 28 are based on the passage you have just heard.{{/B}} A. They pressed the alarm. B. They tried to stop him. C. They stood aside watching him gathering the money. D. They were too frightened to do anything. 参考答案:C 答案解析:[听力原文]
What did the guards do when Peter started gathering the money