Which type(s) of economies interact with other economies?? neither closed nor open economies|closed economies and open economies|only closed economies|only open economies

()economies such as Singapore

External economies外部经济

Car firms are desperate to achieve economies of .

Countries trade with each other because they are _______ and because of ______ A: different, costs B: similar, scale economies C: different, scale economies D: similar, costs

Red tourism has nothing to do with the economies of remote areas. （ ）

Not many economies ______ in 1990, least of all gold exporters like Australia.

Global companies have advantages in economies of scale,, manufacturing, technology development,_

economies such as Singapore Japan and South Korea tend to emphasize education by allocating a large

This passage mainly centers on ______. A: the dramatic shift of the world economic balance B: the impact of the emerging economies of the "third-world" C: China and India's rapid economic development D: rich countries' gain and loss in recent world economies