早稻在()各喷施1次细胞分裂素,可提高结实率。
A、返青期和分蘖期
B、分蘖前期和中期
C、孕穗初期和末期
D、灌浆期和蜡熟期
参考答案:C
He ______that factory since 1958. [ ]
A. has left
B. has worked in
C. has gone from
D. has come to
已知图上站立点,将指北针长边切与站立点和目标点连线,(),使指北针磁针红端与地图()一致,这时指北针面板上的箭头(与长边方向一致)所指方向为目标前进方向。