在我国农业推广史上,首创培训与试验、示范、推广相结合推广范例的农学家是()
A.贾思勰
B.赵过
C.黄道婆
D.徐光启
参考答案:B
—How long does it take you to get to school?
— . [ ]
A. 5 kilometers
B. Every day
C. By bike
D. Around an hour
I治疗甲状腺癌必要条件是()
A.I全身显像中发现聚碘的转移灶
B.转移灶存在,但不摄碘
C.癌肿位于甲状腺,但无转移
D.甲状腺髓样癌
E.甲状腺髓样癌转移