国家赔偿的时效中止可在赔偿请求时效的任一时间发生。

When summer ______, some children will go to the seaside for fun.          [ ]

A. comes      

B. came            

C. will come                   

D. would come

ISC－S皮带称的测速传感器响应频率是（）。

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 in to 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' purpose to write the passage?

A. To encourage.  

B. To compare.  

C. To prove.

D. To explain.

关于乳腺MR技术的论述，错误的是（）

A.对乳腺癌具有很高的诊断价值

B.对乳腺癌具诊断价值的是增强扫描

C.对乳腺癌最具诊断价值的是动态增强扫描

D.由于乳腺以脂肪组织为主，故无法利用脂肪抑制

E.动态增强与平扫减影更有利诊断肿瘤

依据世界大洋表层海流模式，南太平洋中低纬度洋面上为（）

A.季风性环流

B.逆时针大环流

C.顺时针大环流

D.反时针小环流