单选题 Some of the low-end Made-in-China mechanical-electronic products are not selling well in export market as compared with what are termed as high-end ones.
A. on export market B. in exporting market
C. in exported market D. in the export market

【正确答案】 D

【答案解析】[解析] 冠词应用。
in the market“在市场上”，句子中多了一个名词export修饰market因此，定冠词应保留。