美国阿拉斯加的费尔班克斯素有“北极光之都”之称，其观赏极光的最佳季节是（   ）

    Last year, some groups of students in their community (社区) made a survey about “How do people spend their free time? ” The following diagrams(图表) show some results of it:
    Diagram (1): Hours for people of different ages who surf the Internet in a week.

    Diagram (2): Different days people go to the library. (library attendance)

    Diagram (3): Different programs people like.

质量为5.0×10³kg的汽车，在水平路面上由静止开始做加速度为2.0m/s²的匀加速直线运动，所受阻力是1.0×10³N，汽车在起动后第1s末牵引力的瞬时功率是（   ）

①试管②烧杯③量筒④蒸发皿⑤锥形瓶⑥温度计⑦蒸馏烧瓶⑧分流漏斗

回答下列问题：

①都重视农业生产的发展   ②都实行选拔贤才的政策

③都虚心采纳谏言   ④都注意戒奢从简