题目

The computer was cheap I spent only two ______ yuan on it. A. thousands B. thousand C. thousands of D. thousand of 答案：答案：B为了测量某种液体的密度，找来一只空瓶，测得其质量是0.3kg，装满水时，测得其总质量是1.1kg，倒掉水再装满待测液体，测得总质量是1.18kg，求待测液体的密度．