无需对比剂可进行血管成像的检查有（） A.DSA B.CT C.CE-MRA D.C

读对话，选择正确的答案。

Chen Jie: Hi, Mike! I have a new schoolbag.

Mike: Wow. How nice!

Chen Jie: Look, it is purple.

Mike: Mm-May I have a look?

Chen Jie: Sure.

Mike: Wow. So heavy! What's in it?

Chen Jie: Many books.

Mike: How many books do you have?

Chen Jie: Thirty story-books, twenty-three notebooks, two Chinese books and one math book.

1. What colour is Chen Jie's schoolbag?

A. Red.

B. Purple.

2. How many notebooks does Chen Jie have?

A. 31.

B. 23.

3. How many books does Chen Jie have?

A. Thirty-three.

B. Thirty.

4. What are books made of?

A. Paper.

B. Great!

小晶和小红玩掷骰子游戏，每人将一个各面分别标有1，2，3，4，5，6的正方体骰子掷一次，把两人掷得的点数相加，并约定：点数之和等于6，小晶赢；点数之和等于7，小红赢；点数之和是其它数，两人不分胜负，问他们两人谁获胜的概率大？请你用“画树状图”或“列表”的方法加以分析说明。

在空白处填入适当的单词、短语或句子补全对话。

A: Bill, I've been asked to dinner tonight. What time should I arrive for that?

B: Did they tell you __1__

A: Yes, they said the dinner would begin at seven.

B: Then __2__ before 7:00. But make sure you are not much earlier than the time.

A: Why?

B: That's just what it is here. Maybe they are still __3__ the dinner.

A: __4__.

B: For the first time, you can bring a small present. You don't want to show to everyone__5__. rich you

    are, do you?

A: No, __6__ . Thank you for your help.

B: That's all right. __7__ at the party.

Ma量表的K校正分应该是( )。

A．20

B．23

C．24

D．30

结构略为复杂，占地面积较大，但调节压力的性能较好，对燃气质量要求不高，主要作用区域调压及大用户专用调压，是（）式调压器。

A、雷诺

B、自力

C、活塞

D、曲流