世界上现存的古代第一部比较完备的成文法典 。
《汉谟拉比法典》
有理数a、b，规定运算：a*b=a-b，则2*（-3）=______．
—Would you like to go to the zoo with us?
—_______________. [ ]
A. Yes, I’d like
B. Yes, I do
C. Yes, I’d love to
D. No,I don’t
