—Will the football match be covered_______ ?

—Yes, but if you are not a sports fan, you might find it a bit___________.

一Tom, don't be       . You should make your bed every morning.

— Sorry, Dad. I'll do it now.

生物膜在细胞的物质运输、能量转换和信息传递等方面有着重要的作用。下列生物膜能实现能量转换的是
①线粒体外膜       ②线粒体内膜       ③叶绿体外膜
④叶绿体内膜       ⑤叶绿体的囊状结构薄膜

等腰三角形的两边分别为5cm、4cm，则它的周长是：（    ）