一个六边形操场,每边插10面红旗,至少一共要插( )面红旗.
A:60
B:54
C:48
阅读短文,从方框中选择适当的单词填空
population dream is of so
Changqing has a long history but it is the new district of Jinan. It ____ in the west of Jinan. and covers 1178 square kilometers. The ____ of Changqing is about 530,000. It has convenient transportation ____ it's easy to get here. There are many ancient places of interest for you to visit, such as Lingyan Temple, Xiaotang Hill and so on. It has changed a lot since it became the new district of Jinan. Now it has 15 colleges or universities. You can make your ____ come true there. And the Expo garden which was built newly attracts thousands____ visitors every year. Welcome to Changqing, and you will enjoy yourself.
在横线上书写诗文名句、对联和交际语句,
①关关睢鸠,____。(《诗经•关睢》)
②子曰:“____,见不贤而内自省也。”(《论语•里仁》)
③海日生残夜,____。(王湾《次北固山下》)
④长风破浪会有时,____。(李白《行路难》)
⑤____,草色入帘青。(刘禹锡《陋室铭》)
⑥苏轼在《水调歌头•明月几时有》一词中,借明月对远隔千里的胞弟表达思念和祝愿的句子是____,____。
⑦为了祖国的国防事业,核弹专家林俊德带病工作直至生命最后一刻。我们可以引用李商隐《无题》中____,____的来概括他无私奉献的一生。
⑧为了丰富校园文化生活,校文学社开展以“我爱校园”为主题的对联征集活动。请根据所给上联,对出下联。
上联:四季美景养灵性,
下联:____。
⑨暑假,王阳同学和爸爸、妈妈去长白山旅游。在大巴车上,王阳看见邻座的一位中年男子在吸烟,他对男子说了几句话后,男子立刻熄灭了香烟,并表示歉意。假如你是王阳,请把委婉劝阻男子的话写下来。____。
某课外学习小组想描绘标有“4V、2W”的小灯泡的U﹣I图象,除导线和开关外还备有以下器材:
A、电流表(量程0.6A,内阻为1Ω) B、电流表(量程3.0A,内阻为0.6Ω)
C、电压表(量程5.0V,内阻为5kΩ) D、电压表(量程15V,内阻为10kΩ)
E、滑动变阻器(最大阻值为5Ω,额定电流1.0A)
F、滑动变阻器(最大阻值为2kΩ,额定电流0.2A)
G、电源(电动势为6.0V,内阻约为1.5Ω)、导线若干
①雌蚕蛾释放性外激素
②鸟类的各种鸣叫声
③蚂蚁相互碰撞触角
④乌贼受到威胁时释放墨汁
⑤遇到猎豹追捕,瞪羚会急转弯
⑥狗一路走一路撒尿.