当水泵叶片入口附近压强降至该处水开始（），水泵将产生汽蚀现象，使水泵不能正常工作。A

在市场上，金饰品的价格一般都要比黄金的价格贵。这是因为

A．金饰品的使用价值大

B．金饰品的价值大

C．人们喜欢金饰品

D．金饰品可以满足人们的多种需求

阅读理解

      Most people know that Marie Curie was the first woman to win the Nobel Prize, and the first

person to win it twice. However, few people know that she was also the mother of a Nobel Prize

winner.

     Born in September, 1897, Irene Curie was the first of the Curies' two daughters. Along with nine

other children whose parents were also famous scholars, Irene studied in their own school, and her

mother was one of the teachers. She finished her high school education at the College of S?vign? in

Paris.

     Irene entered the University of Paris in 1914 to prepare for a degree in mathematics and physics.

When World War I began, Irene went to help her mother, who was using X-ray facilities (设备) to

help save the lives of wounded soldiers. Irene continued the work by developing X-ray facilities in

military hospitals in France and Belgium. Her services were recognised in the form of a Military's

Medal by the French government.  

     In 1918, Irene became her mother's assistant at the Curie Institute. In December 1924, Frederic

Joliot joined the Institute, and Irene taught him the techniques required for his work. They soon fell in

 love and were married in 1926. Their daughter Helene was born in 1927 and their son Pierre five

years later.

     Like her mother, Irene combined family and career. Like her mother, Irene was awarded a Nobel

Prize, along with her husband, in 1935. Unfortunately, also like her mother, she developed leukemia

because of her work with radioactivity(辐射能). Irene Joliot-Curie died from leukemia on March 17,

1956.(www.yygrammar.com)  

1. Why was Irene Curie awarded a Military Medal?

A. Because she received a degree in mathematics.

B. Because she contributed to saving the wounded.

C. Because she won the Nobel Prize with Frederic.

D. Because she worked as a helper to her mother.

2 . Where did Irene Curie meet her husband Frederic Joliot?

A. At the Curie Institute.                

B. At the Universityof Paris.

C. At a military hospital.                

D. At the Collegeof S ?vign ?.

3. When was the second child of Irene Curie and Frederic Joliot born?

A. In 1932.                              

B. In 1927.  

C. In 1897.                              

D. In 1926.

4. In which of the following aspects was Irene Curie different from her mother?

A. Irene worked with radioactivity.

B. Irene combined family and career.

C. Irene won the Nobel Prize once  

D. Irene died from leukemia.

工程项目经济评价中，财务分析依据的基础数据是根据（）确定的。

A.完全市场竞争下的价格体系 

B.影子价格和影子工资 

C.最优资源配置下的价格体系 

D.现行价格体系

将60kg的80℃热水与40kg的30℃热水混合，水最后的温度为（）℃

某公司从日本进口一批菠菜种子，从美国进口一批生牛皮，下列选项中( )不属于办理这两批商品的报检时都要提供的单据。

A．进境动植物检疫许可证
B．产地证书
C．有关包装情况的证书或声明
D．官方的检疫证书