问题
选择题
The climate change conference has come to __________ end, but the developing countries are dissatisfied with __________ small step that the developed countries have taken to reduce the emission(排放) of water gases.
A．不填， a
B．不填， the
C．an , a
D．an, the
答案
答案：D
come to an end 固守词组。small step 后有一个定语从句，所以要用the。