【判断题】"If the wage rate paid to one form of labor is twice the cost of another form of labor, the first type of labor must be twice as productive." Comment.
【简答题】Task: Read the source materials Study one type of grammar exercises (mechanical) Study another type of grammar exercises (meaningful) Compare and contrast these two types of grammar exercises Which ty...
【单选题】Suppose that a consumer regards two types of soap as perfect substitutes for one another. The price consumption path generated by changing the price of one type of soap
A.
is always upward sloping.
B.
is always horizontal.
C.
is always vertical.
D.
corresponds with the axis for the cheaper soap.
E.
corresponds with the axis for the more expensive soap.