题目：
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
答案：
参考答案：D
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。
