It is Saturday morning. Mrs. Black and her daughter Kate go to the bookshop near their house. Mrs. Black wants to buy some picture books for her grandson. Kate wants to buy some storybooks. In the bookshop Kate meets her old classmate, Sue. They are good friends. They talk and talk for a long time and forge to buy books. At twelve o'clock Mrs. Black finds them and asks Sue to go and have lunch in their house, Sue says: “Yes.” The two girls are very happy.

                                                                                                        少年岳飞
       岳飞，字鹏举，相州汤阴人。世力农。父和，能节食以济饥者。有耕侵其地，割而与之； 贳其财者不责偿。飞生时，有大禽若鹄，飞鸣室上，因以为名。未弥月，河决内黄，水暴至， 母姚抱飞坐瓮中，冲涛及岸得免，人异之。
       少负气节，沈厚寡言，家贫力学，尤好《左氏春秋》 、孙吴兵法。生有神力，未冠，挽弓三百斤，弩八石，学射于周同，尽其术，能左右射。同死，朔望设祭于其冢。父义之，曰：“汝为时用，其徇国死义乎！”
【注释】:①贳：出租，出借。 ②弥：满。 ③内黄：今河南省内黄县。 ④沈厚：性格深沉而敦厚。沈，通“沉”。⑤朔望：农历每月初一叫朔，十五叫望。⑥义之：认为他很重义气。

我国已成功发射嫦娥三号探月卫星，该卫星着陆以前，在距月球表面约为100m的高度处开启喷气发动机，向下喷气使其处于悬浮状态，以观察地形，选择合适的着陆地点．如果月球表面的g是地球表面的1/6，探月卫星在着陆时的质量为1.2吨，那么，嫦娥三号探月卫星，在着陆前悬停时开动的喷气发动机的推力为（g_地=10N/kg）(    )

---How's the weather in Boston?

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