正常肾血流量约占心输出量的：（） A．10％～20％ B．20％～25％ C．25％

下列词语中，没有错别字的一组是

A．青睐制高点墨守成规毋庸置疑

B．震撼连锁店言简意赅声名雀起

C．追溯名信片情有独钟察言观色

D．磋商绊脚石一如即往礼尚往来

补全对话.

S:I've just been to the English Corner:

T:  1   Did you talk with Ben and Andy?

S:  2   And I'm not sure if they understood me.

T:  3   You have had a good start.

S: But I'm afraid of making mistakes when I speak.

T: We all learn from mistakes, don't we?   4  

S: But do you think they like to talk with beginners?

T:  5  

A. Be confident of yourself.

B. Yes, but only a little.

C. Oh? That's great.

D. Don't worry.

E. Yes, unless they're busy.

1.____      2．____ 3．        4.____      5．____

动作技能形成的规律大致分为（）、（）和（）三个阶段。

评价生油岩的丰度指标有（），（），（）和（）等；成熟度指标有（）（），（），（），自由基含量，（）