食人鱼是脂鲤目脂鲤科锯脂鲤属鱼类的统称,是南美洲食肉的海水鱼。
参考答案:错
In our school, the students have three_____ courses, and seven______ entrepreneurial education courses .
A.required; alternative
B.requiring; alternative
C.required; alternate
D.requiring; alternate
阶级道德或社会道德,在很大范围上都是通过具体的职业道德形式表现出来的。