问题 单项选择题

关于胎盘功能的叙述,错误的是

A.O2及CO2的交换以简单扩散方式进行

B.氨基酸以主动运输方式通过胎盘

C.胎盘的屏障作用有限

D.胎盘分泌的HCG属于甾体激素

E.通过胎盘排出胎儿代谢产物

答案

参考答案:D

解析:HCG也是一种糖蛋白激素,分子量约36700,由α亚基和β亚基组成。

填空题
阅读理解

A few years ago, I moved into a new house in Los Angeles. Soon after, a family moved in next door. It wasn’t the best of times for me. I had just divorced(离婚) from my second wife, and I wasn’t working. I’d come home each day and sit by myself in the backyard. One night, I heard someone from the yard next door, “Tom ! How are you, Tom? ” 

I couldn’t see anybody through the trees, but I answered, “I’ m good.”

“Good!” said the voice.

“What’s your name?” I asked.

“Eric.” Then I heard someone say, “Eric, don’t bother him.”

“Okay!” Eric said. “Talk to you tomorrow!”                                                                           

Months later, on Halloween, we finally met face to face. Eric came to the door dressed like a rap star. We became friends. We’d hang out in our yards, and Eric, who was almost 17 at the time and look liked a 13-year-old, would tell me his ideas and dreams. Eric’s dad, Alec Gores, is a billionaire(亿万富翁), the head of Gores Technology Group.

One day, Alec called me and said, “I know you are an actor. My son’s an actor, too. And he’s very good. I want you to write a movie for him. He wants to do something like True lies.” That’s the movie I made in 1994. His father has given Eric the great gif of confidence. He believes he can do anything he wants. He also offered to fund the movie. And that’s how The Kid & I, which opens in November, began.

Well, I really have to say that opportunity(机会)lies anywhere.

小题1:What do we learn about the writer when he had just moved into his new house in Los Angele?

A.He often came back very late.

B.He was working in the city at that time.

C.He and his second wife had just gotten divorced.

D.He often talks with others in the backyard.小题2:The writer of this passage is a(an)        .  

A.teacher

B.actor

C.singer

D.doctor小题3:What do we learn about Eric from the passage?

A.He lives alone with his father.

B.He has a very rich father

C.He often feels very lonely.

D.He is a rap star.小题4:The second last paragraph(倒数第二段)mainly tells us        .

A.how The Kid & I began

B.the roles in The Kid & I

C.how the writer met Eric’s father

D.what The Kid & I is about小题5:From his experience in Los Angeles, the writer learnt that        . 

A.where there is a will, there is a way.

B.one should always learn from the past.

C.one can find opportunity anywhere.

D.life can always be better.