Ⅰ亡羊补牢:①死;②丢失;③灭。____
Ⅱ每逢节假日就会有许多游客到我们泰顺旅游观光:①光线;②光彩;③景物。____
Ⅲ村东头,大树下,几个孩子在比绝招:①断;②尺,穷尽;③独一无二的。____
下列关于生物生殖和发育的叙述不正确的是( )
要求:1.受欢迎的原因至少写三点;2.80词左右,可适当发挥;短文开头和结尾已给出,不计入总词数。
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(Ⅰ)证明:AC是圆O的切线;
(Ⅱ)设AC与圆O的切点为F,求证:EF∥AO.