精神产品是出版物的本质属性。
参考答案:对
7+7+7+7写成乘法算式是[ ]
A.4×7
B.7×4
C.7×4或4×7
-- Tony, do you know if Frank ______ to the park with us this Sunday if it ______?
-- Sorry, I have no idea.
A.will go; is fine
B.goes; is fine
C.will go; will be fine
D.goes; will be fine