根據(jù)短文內(nèi)容，從各題所給的A、B、C、D四個(gè)選項(xiàng)中選出最佳選項(xiàng)。
It was two days before Christmas, when my ten-year-old Almie Rose told her father and me that she wanted a new bike.  Her bike was too   16  , and it needed repairing as well.
As Christmas   17  ,  her dream for a bike seemed to disappear, we thought, for she didn’t say it again. We were busy   18  some beautiful story books, a doll house, a holiday dress and toys. Then to our surprise, on December 24, she said she really wanted a bike more than   19  .
Now we didn’t know   20  to do. It was just too late. We were busy with Christmas dinner and packing   21  presents, parents’ presents, a brother’s present and friends’ presents till midnight. So there was   22  time to take to buy the "right hike" for our little girl. Thinking we were parents who would make their child unhappy, we felt sorry and   23  .
Suddenly my husband had an idea. "What about making a little bike with clay (mi) and writing a note that she could trade in (交換) the model bike for a real one?" So he spent the next five hours carefully   24  with clay to make a small bike.
25  Christmas morning, we were so excited for Almie Rose to open the little box with the beautiful red and white clay bike and the note. She opened and read the   26  loudly. She looked at me and said, "So, does this mean I can trade in this bike for a real   27   ?" Smiling, I said, "Yes!" Almie Rose had tears in her eyes when she replied, "I would   28  trade in this beautiful bike   29  Daddy made me. I   30  keep it than get a real bike. This is the best Christmas present I have ever got in my life!"

Is human blood all the same? “Yes，” you may say．“It's all red．”

Well，it's not as simple as you might think．

Blood is made up of different parts，such as red blood cells，white blood cells，and platelets（血小板）．

Two chemical molecules（分子）on the red blood cells make people's blood different．Scientists mark one molecule "A" and the other molecule "B".

According to which and how many molecules are on the red cell, scientists divide blood into four types: A, B, AB and O.

Your blood type will stay the same your whole life.

Scientists have been wondering if there are some links between people's blood type and their personalities but they don't know for sure yet.

  But some say that people with the same blood type may have things in common.

What's your blood type? Do you have family members or friends who are the same type as you? Read the following. Are you like this?

People with type A: They look peaceful from the outside. But they ask too much of themselves that they may be very nervous inside. They get happy or sad easily. Sometimes they are shy but always very careful. They can easily win people's trust.

People with type B: They have strong minds. Once they start a task, they don't give up easily. They'll try their best to finish it and do it well. Type B people always try to make themselves different from others. They want to do things in their own way in life.

People with type AB: They are maybe the strangest among all blood types. They can be both open and shy, noisy and quiet at the same time! They are responsible （負(fù)責(zé)的） and always ready to help others.

People with type O: They're open and good at making friends. They always start tasks but don't always finish them. They have lots of new ideas and love to be the centre of attention. They always strongly believe in themselves.

1. What's the main subject of this passage?

A．blood types                                      B．blood types and personalities

C．personalities                                      D．scientific research on blood

2. The blood types are decided by ____________.

A．the amount of white blood cells

B．the amount of platelets

C．the kind and amount of molecules on the red cell

D．the kind and amount of molecules on the white cell

3. Scientists are ________ about the relation between blood types and personalities.

A．not sure                    B．quite sure            C．excited               D．worried

4. If a person always tries to be different from others, he/she might have _________ blood.

A．A type               B．B type                C．AB type              D．O type

5. Which of the following is NOT true according to the passage?

A．A person's blood type will never change throughout his life.

B．A person's blood type might have something to do with his/her personality.

C．A person with type O blood is usually confident.

D．A person with type A blood has the strangest personality.