A:2a﹣3
B:2a+3
C:1
D:3
21世纪以来,我国加强工业开发,鼓励技术创新,正在向制造业强国迈进.据此回答下题.
The chicken and beef__________ very nice.
读一读,选词填空。
no swims yellow swan opens ugly babies
its children hungry Tian'anmen Square fall women difficult her stop the Palace Museum