题目

只测一次，要求较准确的测出90cm3的酒精，请你在下列四种规格的量筒中，选出适当的量筒（） A . 量程是100mL，分度值是1mL B . 量程是200mL，分度值是2mL C . 量程是50mL，分度值是1mL D . 量程是50mL，分度值是2mL 答案：AWith time going by, we have come to realize that creativity is it takes to keepa nation highly competitive.A. what B. howC. why D. that