题目

---- Could you tell me how I can get to the park?   ----_______. I am also new here.      A. Thanks a lot                   B. All right       C. That's right                     D. Sorry, I don’t know 答案：D16．计算：$\sqrt{（-\frac{1}{2}）^{2}}$×（-$\sqrt{2}$）2-$\root{3}{27}$÷（$\root{3}{-\frac{1}{3}}$）3．