动静脉畸形最佳检查方法为（） A.CT  B.MRI  C.MRA  D.DSA

为了降低监管成本，提高监管效率，市场行为监管者通常需要遵循的原则为()

A.效率公平原则

B.重点有序原则

C.收益性原则

D.安全性原则

E.合理合法原则

在违反治安管理行为构成要件中，( )处于核心地位。

A．危害行为

B．主观要件

C．危害结果

D．主体要件

下列细胞中，可用于作用间接血凝试验的载体的是

A．人O型红细胞

B．人A型红细胞

C．人B型红细胞

D．人AB型红细胞

E．以上都可以

When I was 12, all I wanted was a signet (图章) ring. They were the "in" thing and it seemed every girl except me had one. On my 13th birthday, my Mum gave me a signet ring with my initials(姓名首字母) carved into it. I was in heaven.

What made it even more special was that it was about the only thing that wasn't being "replaced". We'd been burnt out in fires that swept through our area earlier that year and had lost everything—so most of the " new" stuff (东西) we got was really just to replace what we'd lost. But not my ring. My ring was new.

Then, only one month later, I lost it. I took it off before bed and it was missing in the morning. I was sad and searched everywhere for it. But it seemed to have disappeared. Eventually, I gave up and stopped looking for it. And two years later, we sold the house and moved away.

Years passed, and a couple of moves later, I was visiting my parents' when Mum told me that she had something for me. It wasn't my birthday, nor was it Easter or Christmas or any other gift-giving occasion. Mum noticed my questioning look. " You'll recognize this one," she said, smiling.

Then she handed me a small ring box. I took it from her and opened it to find my beautiful signet ring inside. The family who had bought our house 13 years earlier had recently decided to do some redecorations, which included replacing the carpets. When they pulled the carpet up in my old bedroom, they found the ring. As it had my initials carved into it, they realized who owned the ring. They'd had it professionally cleaned up by a jeweler before sending it to my mother. And it still fits me.

小题1:The underlined word "in" in the first paragraph probably means "_____".

A．fashionable

B．available

C．practical

D．renewable小题2:When she got the ring back, the writer was about _____.

A．13 years old

B．15 years old

C．26 years old

D．28 years old小题3:Which of the following is TRUE according to the passage?

A． The writer's family moved several times.

B． The writer never stopped looking for her ring.

C． The writer's ring was cleaned up by the new house owner.

D． The writer lost her ring in the morning when she took it off.小题4:What would be the best title for the passage?

A．My New Ring

B．Lost and Found

C．Lost and Replaced

D．An Expensive Ring

遗传工作者在进行遗传病调查时发现了一个甲、乙两种单基因遗传病的家系，系谱如下图所示，请回答下列问题（所有概率用分数表示）：

如果Ⅱ－4、Ⅱ－6不携带致病基因，按照甲、乙两种遗传病最可能的遗传方式，请计算：①双胞胎（Ⅳ－1与Ⅳ－2）同时患有甲种遗传病的概率是（）。②双胞胎中男孩（Ⅳ－1）同时患有甲、乙两种遗传病的概率是（），女孩（Ⅳ－2）同时患有甲、乙两种遗传病的概率是（）