根据句意，将下面的单词补充完整，每空一个字母。

1. There will be less p __ __ __ __ __ __ __ __ in Beijing in 2008.

2. Where do you live? I live in an a __ __ __ __ __ __ __ __.

3. I need some money to by a g __ __ __ for my friend. Tomorrow is his birthday.

4. My friend wears the same c __ __ __ __ __ and has the same haircut as I do.

5. The boy was walking down the street w__ __ __ the UFO landed.

6. I saw an a __ __ __ __ walking out of the UFO last night.

7. Marcia was hungry. Lana said she would b__ __ __ __ some drinks and snacks to Marcia's house.

8. Mary has been to many countries. She said she could s __ __ __ __ three languages.

9. Yao Ming is a f__ __ __ __ __ basketball player.

10. If the students watch a v __ __ __ __ at the party, they will be bored. Because it is very boring.

MR成像中，哪些与图像的对比度有关（）

A.脉冲序列

B.脉冲参数

C.造影剂

D.以上均是

E.以上均不是