成人牙周炎的重要病原菌是（） A.放线菌属 B.拟杆菌属 C.普氏_爱下问搜题

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问题单项选择题 A1/A2型题

成人牙周炎的重要病原菌是（）

A.放线菌属

B.拟杆菌属

C.普氏菌属

D.梭杆菌属

E.牙龈卟啉单胞菌

答案

参考答案：E

解析：牙龈卟啉单胞菌是口腔常见的产黑色素菌种，其外膜蛋白、菌毛和产生的胰酶样蛋白酶是主要的毒性基因，被认为是成人牙周炎的重要病原菌。此外，放线菌属中的伊氏放线菌、内氏放线菌，拟杆菌属的福赛坦菌、普氏杆菌及梭杆菌都被认为与牙周炎有关。

完形填空

My dad was driving to the city center to shop and I was going along for the ride. At least that was what I had told him—   1  I had an important question to ask—that had been on my mind for a couple of weeks and this was the first time I had been able to   2  with him alone.
“Dad…”I started. And   3 .
“Yes?” he said.
“The kids say there is no Father Christmas. They say I’m   4  to believe in Father Christmas anymore…it’s only for little kids. But I believe what you told me. Father Christmas is __5 . He is, isn’t he, Dad?”
“The real life and spirit of this magical elf (精灵) lives forever in your heart, my heart, Mom’s heart and in the hearts and minds of   6  people who believe in the joy that giving to others brings. The real   7  of Father Christmas becomes what you can give rather what you get. Once you understand this and it becomes   8  of you, Father Christmas becomes even more exciting and more magical because you come to   9  the magic comes from you when Father Christmas lives in your heart. Do you understand what I am   10  to tell you?”
My heart was filled with pride and I’m sure my eyes were shining with   11 .” Of course, Dad. I want him to be in my heart, just like he’s in yours. I love you, Daddy. You’re the best Father Christmas who has   12  been in the whole world.”
When it comes time in my life to   13  the reality of Father Christmas to my children, I hope that I will be as eloquent (有口才) and   14  as my dad was the day I learned that the spirit of Father Christmas doesn’t wear a red   15 . And I hope they will accept me as I did that day. I’m sure they will.

A．considering

多项选择题

甲、乙、丙、丁准备设立一家有限合伙企业，甲乙是有限合伙人，丙丁是普通合伙人。下列选项不符合合伙企业法要求的有（）。

A.甲是国有企业

B.乙以劳务作价出资

C.丙提出企业名称为“××有限合伙公司”

D.丁认为人数不符合要求