由氨基酸途径生成的化合物是
A．生物碱
B．脂肪酸类
C．糖类
D．皂苷
E．香豆素类
参考答案：A
解析：生物碱属于氨基酸途径生成的化合物之一。
Drought continues to annoy many parts of China, with tens of thousands ____water shortages and
millions of others ____.[ ]
A. suffering; affecting
B. suffering; affected
C. suffered; affected
D. to suffer; affecting
压铸合金
