细胞是构成生物体的基本结构和功能单位．如图所示为动、植物细胞结构的模式图，据图回答下列问题：

如图，请用简洁的语言概括“学习金字塔”所反映的两条规律，并据此为老师的教学提出一条建议。

治理黄河的根本是      （      ）

    The Abbey Road pedestrian crossing in Northern London is one of the world's most famous ____ it is on the cover of Beatles album. Now, the British government ____(put) it on the list of national heritage sites.

    ____ (normal), only buildings and other architectural sites get the award. It is the first time ____ a section of street became part of ____ (Britain) National Heritage. The crossing is near the Abbey Road studios ____the Beatles made most of their records. Today it can ____(see) around the world on a special webcam(网络摄像头). The studio building ____(it)became listed by British Heritage last February. The photographer of the picture said he only had 10 minutes ____(take) it. It became one of the most famous album covers of all times. The Abbey Road album was ____last one the Beatles completed before they broke up.