A:利用植物体细胞杂交技术获得目的植株
B:将乙种植物耐盐基因导入到甲种植物的卵细胞中,然后进行离体培养
C:两种植物有性杂交获得F1,再利用单倍体育种技术
D:诱导两种植物的花粉融合,并直接培育成幼苗
Many a student __________ wearing MP3 players while walking on the street. It's quite dangerous. ( )
The writer his home town and worked for a newspaper.
***第十四次全国代表大会提出的经济体制改革的目标是