已知直线x+ay﹣1=0是圆C:x2+y2﹣4x﹣2y+1=0的对称轴,过点A(﹣4,a)作圆C的一条切线,切点为B,则|AB|=( )
A:2
B:6
C:42
D:210
下列关于经线或纬线的叙述,正确的是( )
Hello, boys and girls. My name is Kangkang. I’m from Tianjin. I’m No.1 middle school. My mother works in No.1 middle school. She teaches Chinese. My father is a doctor in a hospital. They both work hard. On Sunday my mother and I often do some shopping. My mother likes shopping a lot. We will go shopping this Sunday afternoon. My mother says she will buy me a red coat. But I don’t like red. I want a yellow one. My mother says yes to me. I am happy. My father doesn’t like shopping at all. He likes animals best. He often takes me to the zoo. My favorite animal is the panda. I think panda are very cute. This Sunday morning my father will go to the zoo with me. I love my parents very much. They love me, too. I have a happy family.
达尔文的《物种起源》发表后,引起了宗教势力的强烈反对,他们叫嚣“打倒进化论”“粉碎达尔文”等。这说明( )
①达尔文的进化论给上帝创造万物说以沉重一击②达尔文的进化论动摇了宗教神学的根基③达尔文的进化论反映了新兴资产阶级的要求④达尔文的进化论具有严密的科学性