第3题: [单项选择]1分子乙酰CoA经过三羧酸循环氧化能生成几分子ATP A. 12 B. 14 C. 6 D. 36 E. 38 参考答案:A 答案解析:1分子乙酰CoA经三羧酸循彻底氧化产生2分子CO2、12分子ATP。答案选A。
第4题: [单项选择]张、王、李、赵各有一个作业本混放在一起,这4个人每人随便拿了其中一本,那么谁也没能拿到自己作业本的拿法有多少种( ) A. 24种 B. 16种 C. 9种 D. 4种 参考答案:C 答案解析:[解析] 本题用分步法解答。第一个拿作业本的人除自己的作业本外有3种拿法;被第一个人拿走了作业本的人也有3种拿法;这时剩下的两个人只能从剩下的2本中拿,要每人都拿错只有1种拿法。根据乘法原理,四人都拿
第15题: [单项选择]Diane Larsen-Freeman refrains from saying that some teachers are doing wrong because ______. A. she wants to sound polite B. she thinks language teaching is not a right-or-wrong matter C. she thinks they are doing their best D. she believes no teaching is perfect 参考答案:C
第16题: [单项选择]对被盘问人的留置时间自带至公安机关之时起不超过( )小时,在特殊情况下,经县级以上公安机关批准,可以延长至( )小时,并应当留有盘问记录。 A. 24,48 B. 24,36 C. 48,72 D. 36,48 参考答案:A 答案解析:[解析] 《人民警察法》第9条第2款规定:“对被盘问人的留置时间自带至公安机关之时起不超过二十四小时,在特殊情况下,经县级以上公安机关批准,可以延长至四十八小时,并应当留有盘问记录。对于批准继续盘问的
第20题: [单项选择]Some bosses dislike (to allow) people (to share) their responsibilities; they keep (all) important matters (tightly) in their own hands. A. to allow B. to share C. all D. tightly 参考答案:A 答案解析:dislike doing sth.指“不喜欢做……”.
Why did the woman prefer to go by sea A. She wanted to save money. B. She had trouble with her heart. C. She thought it was much safer. 参考答案:C 答案解析:从Jack劝慰Julie时说的“plane crash”、“air crashes”等词可以判定女士认为飞机不安全,所以选C。