3. For non-multiple choice questions: Use a purple pen to answer directly in the corresponding answer area on the answer sheet. Answers written on the test paper, scratch paper, and non-answer areas on the answer sheet are invalid.
Given $a = \log _ { 2 } 0.2 , b = 2 ^ { 0.2 } , c = 0.2 ^ { 0.3 }$, then
3. For non-multiple choice questions: Use a purple pen to answer directly in the corresponding answer area on the answer sheet. Answers written on the test paper, scratch paper, and non-answer areas on the answer sheet are invalid.