玉米C群雄性不育系的恢复受到两对显性互补基因的控制。
参考答案：错
My mother ______ make rice dumplings, she'll teach me how to do it. [ ]
A. must
B. need
C. should
D. can
央视曝光山东农民违规使用剧毒农药种植生姜销售，我们在责备农民的同时还能想到什么
