在出口信用保险中，（）工作的重要性高过其他任何保险。 A.评估风险 B.赔偿 C.追

Read and tick（阅读短文，判断下面的句子是否正确，正确的在括号里画“√”，

不正确的画“×”） 

     Hello, I'm Sarah. Welcome to my school. This is the canteen. We have breakfast at 7

o'clock and have lunch at 12 o'clock.  This is the library.  There are many books. I like books

very much. This is our classroom. There is a computer and a TV in our classroom. This is our

playground. The weather is sunny and warm. And it's 4 o'clock.  It's time for P. E. class. We

can play football. Let's go.

( )I. Sarah has breakfast at eight o'clock.

( )2. I can see a computer in Sarah's classroom.

( )3. Sarah likes books very much.

( )4. Today is cold and windy.

( )5. Sarah can't play football at P. E.  class today.

已知二次函数y=ax²+（km+c），当x=3时，y=15；当x=-2时，y=5，试求y与x之间的函数关系式．

开角型青光眼可以()

A．无任何症状、不知不觉中失明

B．头痛、恶心、呕吐、眼压升高而失明

C．晚上看电视后眼发胀、视力下降

D．眼胀、虹视、恶心、呕吐、眼压升高

E．以上都不是

骨显像骨转移最常见的典型表现是

A．单发冷区

B．单发热区

C．多发、非对称、元规律分布的放射性浓聚或增高区

D．弥漫性放射性增高

E．炸面圈样改变

一艘船长为40m的钢质内河A级航区起重船，《内河船舶法定检验技术规则》2004及修改通报在船舶稳性衡准准中，对该船的极限静倾角有何要求？