亚热带作物正常生长发育要求的≥10°积温为()。
A.2500°以上
B.3500°以上
C.4500°以上
D.5500°以上
参考答案:C
—I won’t go to the cinema this evening. I ______ watch the charity show. It’s more exciting.
A.had better
B.would rather
C.ought to
D.have to
夜间痛明显及水杨酸类药物可缓解疼痛的肿瘤是()
A.骨样骨瘤
B.软骨肉瘤
C.骨肉瘤
D.骨瘤
E.骨软骨瘤