①a阶段为有丝分裂、b阶段为减数分裂

②M点所示过程与细胞膜的流动性有关

③GH段和OP段，细胞中含有的染色体数是相等的

④MN段发生了核DNA含量的加倍

    Hollywood child star Shirley Temple died on Monday Feb 10th 2014, at home in Woodside, California, from natural causes. "She was surrounded by her family and caregivers," a statement said.
    With her sweet smile and curly blonde hair, she was one of the most popular stars of the 1930s, in hit movies like Bright Eyes and Stand Up and Cheer.
    Her singing, dancing and acting won over fans worldwide. She was given a special Oscar in 1935, when she was just six years old. To this day, she is still the youngest person to receive the award.
    After retiring from films at the age of 21, Temple returned to the spotlight as a politician(政客) and diplomat  (外交官)  .
    Shirley Temple started her film career at three years old. Between 1934 and 1938 she appeared in more than 20 feature films and was the top US movie star at that time.
    As well as being the youngest ever winner of an Oscar (at the age of 6 years and 310 days), Temple was also the youngest person to present one of the statuettes(小雕像). She stood on a chair to give Claudette Colbert the best actress prize for It Happened One Night in 1935.
    At the age of 12 Temple's star burnt out -- her parents stopped her from making movies and sent her to a girls' school. Her final film , A Kiss For Corliss, is available to watch online for free. This is star's final ever moment on the big screen. The actress retired from Hollywood in 1950, but she still appeared occasionally on TV.
    In 2006, she accepted the Life Achievement Award at the 12th Annual Screen Actors Guild Awards.

当120°E处为11时20分时，地方时正好为12时处的经度是(    )

左图为我国某地(40°N，112°E)南坡的植树造林整地模式示意图，右图为沿图3中PM一线所作的剖面图。该模式是先在山坡上沿等高线挖沟，将沟内挖出的底土在沟前培埂（右图中A处），再用沟上沿的活土回填到沟的下方（右图中B处），最后在内斜坡一例（图4中C坡）栽种小树苗。根据图文材料完成下列各题。