下面中，按公式计算，3岁小儿的身长应为（）cm
A.70
B.80
C.84
D.91
E.96
参考答案：D
解析：3岁小儿身长为70+7×3=91cm。
水泥砂浆地面抹灰，如何做灰饼
—Have you got any idea why Mother asks for me?
—She wants you to________ your staying up last night.
A．search for
B．account for
C．wait for
D．say for
