第4题: [单项选择]Without the friction between their feet and the ground, people would ______ be able to walk. A. in no way B. on any account C. by all means D. in no time 参考答案:A 答案解析:[精解] 题型:词汇题。此题考查介词短语。根据题干,首先确定该空应有否定的意思,因此可排除on any account“无论如何;不管怎么说”和by all means“务必;好的,当然可以(作简短回