自己先做~

做完之后滑这儿，就能对答案




 

The correct answer is: A

解析：SMART is 'Specific, Measurable, Attainable, Relevant and Time-bounded', although versions differ.

Manageable and Motivational are both very plausible - and also qualities of effective goals - but you wouldn't want to replace 'measurable', which is essential (otherwise, how will you know when you've reached your goal?).