第11题: [单项选择]Numerous experiments have demonstrated that mass is ______ to energy. A. convertible B. exchangeable C. transplantable D. conceivable 参考答案:A 答案解析:填词题的做题窍门在于先要读懂题意。本题题句Numerous experiments have demonstrated that mass is ______ to energy的意思是:无数的实验已