题目

物质A里只含有6×1023个分子，在这些分子里共含有12×1023个原子，那么A物质一定是 单质B．纯净物  C．混合物  D．不能断定                                 (    ) 答案：D11．There's a science to setting goals．Below，we share some research-backed tips to help you carry out successful goals．Choose a goal that matters，not just easy to win．A meaningful goal-（61）onethat truly inspires you to change-requires going deeper．Think about what you want in the coming year，then ask yourself （62）why you want that．For example，if you want to quit （63）smoking（smoke），ask why do you want to quit？Then，if you want to quit for your health ask why do you want good health？Then，if your answer is to be alive long enough （64）tomeet（meet） your grandchildren，ask why do you want to meet your grandchildren？Set up your goals positively．How you describe your goal makes （65）abig difference．Focusing on （66）whatyou want to"bring into your life-not what you want to avoid-will make you more likely to （67）actually（actual） pursue it．"Prepare for failure（in a good way）．Moments of failure （68）are（be） unavoidable，but most of us abandon the goal entirely when slight failures and setbacks start piling up．At the moment when you fail，often the first instinct（本能） is to push the goal away．It's so （69）uncomfortable（comfort）  to be in that condition of self-doubt or self-criticism and guilt．Your task is not to avoid failures，（70）butto plan for them．Ask yourself，how am I likely to fail？For example，if you're likely to choose unhealthy meals when you're hungry，carry a light snack with you．