政协委员由提名推荐产生的程序是（）A、自荐申请、协商审议、投票表决。 B、提名推荐、

无需向获证企业采购，可在市场上直接采购的产品有( )

A．电机产品

B．化妆品

C．食品

D．玩具

胃癌多发生的部位是

A．胃小弯

B．胃大弯

C．胃底部

D．胃窦部

E．胃贲门

阅读理解。

     It is common and usual to see people freak out when they face challenges in their life. We all

pass in different life problems and challenges. No one is free of life problems. Only a dead man

faces no problem. As long as you are alive, challenges are everywhere.

     How do you face problems and challenges in your life? Problems and challenges are the building

blocks of your personality. They make you who you are. Besides, whether what happened in your

life builds or destructs you depends on how you look at it. If you take your problems as troubles,

they will be troubles and may cause destruction. If you take them as constructive tools, you are going

to be built up on them.

     Problems are everywhere. No one can avoid them. And they are good too. They open up a

different look and opportunity if you are willing to see. When you face troubles, do not frustrate or

freak out. Just cool yourself to think in a different direction. Think in a positive way. Every problem

has its own good as well as bad sides. Focus on the good one. Look at the bright side.

     Besides, there is always a good person, perhaps your mom or dad, or one of your friends, right

beside you who can turn everything into your best if you are willing to turn to them. No matter what

happens, they will be there to help you. Trust them and they will never let you down. All you need

to know is that you are loved wherever you are.

1. What's the meaning of the underlined phrase "freak out" in Paragraph 1?

A. Feel shy.    

B. Stay calm.  

C. Keep up.    

D. Feel upset.

2. In Paragraph 2, the writer implies that ______.

A. problems cause troubles  

B. attitude is everything

C. challenges can be avoided  

D. personalities are built on failures

3. According to the last paragraph, when we're in trouble, we ______.

A. can only depend on our parents      

B. are not alone

C. should only believe ourselves        

D. are not confident

4. What's the writer's purpose to write the passage?

A. To encourage.  

B. To compare.  

C. To prove.

D. To explain

女婴，8个月，近两个月来面色苍白，食欲减退入院。生后一直牛奶喂养，未加辅食。化验：血红蛋白及红细胞均低于正常，诊断为营养性缺铁性贫血。此患儿发病的主要原因是()

A．喂养不当

B．丢失过多

C．营养物质吸收障碍

D．生长发育过快

E．慢性感染

彩色光的三要素是：亮度、______、饱和度。