问题
选择题
Science and technology have in important ways contributed to the improvement of agricultural production.
A．contributed to
B．resulted from
C．carried off
D．handed over
答案
答案：A
四个选项分别表示导致、缘自、带走和上交，根据题意选A，科学技术应经在一些重要方面导致了农业生产的提高。