蚕豆幼苗的根尖吸收水分和无机盐的主要部位是( )
A:根冠
B:分生区
C:伸长区
D:成熟区
下列地区中,属于基督教发源地的是( )
阅读下面一首宋诗,然后回答问题。 宿云梦馆 欧阳修 北雁来时岁欲昏,私书归梦杳难分。 井桐叶落池荷尽,一夜西窗雨不闻。 【注】欧阳修曾坐“朋党”之罪出放外任,这诗是外放时途经云梦驿馆之作。
下列关于我国人口的叙述,错误的是( )
(Ⅰ) 写出直线l普通方程和曲线C的直角坐标方程;
(Ⅱ) 过点M(﹣1,0)且与直线l平行的直线l1交C于A,B两点,求|AB|.
根据句意及首字母提示填空。(1)You can ask a____ around you for help when you are in trouble.(2)The girl will give us a c____ in English this afternoon.(3)His s____ cheered the girl up. She was very thankful (感谢的).(4)She always feels n____ when she speaks in public.(5) —Don't make so much n____ . Your father is sleeping. —Sorry, Mom. I won't do that again.