使自己的思维受到已知客观事物充分检验的特征，是思维的（ ）性。

A．批判

B．灵感

C．深刻

D．广阔

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