单项选择题

Now since the assessment of intelligence is a relative matter we must be sure that the scale with which we are comparing our subjects provides valid or fair comparison.

A．comparable
B．comparative
C．competitive
D．compatible
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单项选择题
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
单项选择题
We are delighted to establish business relationship with you.
A．be established
B．establishing
C．be establishing
D．have established
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