大豆胞囊线虫病在欧洲的爆发流行直接推动了植物线虫学的发展。
参考答案:错
He ______ very busy this week, he ______ free next week.[ ]
A. will be; is
B. is; is
C. will be; will be
D. is; will be
大部分毒物吸收都是通过哪种方式()
A.主动转运
B.易化扩散
C.膜动转运
D.被动转运