Text A of Unit 1 discusses about the issue of ________.A. medical practice B. medical treatments C. high cost medicine D. high-tech medicine A: medical practice B: medical treatments C: high cost medicine D: high-tech medicine

What made a large scale of industrial production possible?

请在下面几个相同含义的句子中，选择出你认为是formal expression的句子： A: There isn’t very much research on the use of oil palm shell as coarse aggregate in the production of concrete B: Little research has been conducted on the use of oil palm shell s coarse aggregate in the production of concrete. C: There isn't plenty of research on the use of oil palm shell as coarse aggregate in the production of concrete. D: There is only a little research on the use of oil palm shell as coarse aggregate in the production of concrete.

________ is a type of technology that centers on large-batch production and requires moderate levels of complexity and sophistication. A: Unit production B: Mass production C: Process production D: Service production

If we use harmony in enconomy,we can promote the development of production and prosperity of economy.