（）是指在自然失业率范围内的就业水平，其内涵包括数量和质量。A、充分就业B、就业者C

阅读理解。

     Mr Brown looks worried these days. Something is wrong with John's head. He took the little boy

to a hospital. The doctor looked over him and said that the boy needed an operation or he would die.

John's mother is often ill and she can't work. John's two sisters are at school. Sometimes his family has

little food to eat and Mf Brown has no money to pay for the operation.

      "Why not go and borrow some money from M r Green?" said M r s Brown. "You helped him

before."

     Mr Green has much money. But he never helps anybody. So he has few friends in the village and

nobody likes him. M r Brown was afraid that his friends would know about it. So he went to the man's

house at night.

     "I want to ask you for some help, but can you keep a secret for me?"

      "Of course ! "

     "My son needs an operation, Mr Green," said M r Brown." Or he will die. Will you please lend

me some money?"

     "Don't worry, M r Brown," said the rich man." I will take it as if(好像) I didn't hear you! "

1. What's M r Brown afraid?

     He is afraid that John _____.

2. How many people are there in John's family?

     There _____.

3. Why can't M r Brown pay for the operation?

     Because he is _____.

4. Why did M r Brown go to M r Green's house in the evening?

      He was afraid that his friends would see _____ M r Green's house.

5. What did M r Green's words mean?

     Mr Green didn't want to _____ money to M r Brown.

根据不同的信用评级，甲公司能够按照6%的固定利率或SIBOR＋0.5%的可变利率从银行借款，而乙公司能够按照7.5%的固定利率或SIBOR＋0.8%的可变利率从银行借款。甲公司与乙公司在固定利率市场与浮动利率市场上的质量差幅的差额是（）。

A.0.3%

B.1.2%

C.1.5%

D.1.8%

要定量检测人血清中的生长激素，采用的最佳免疫检测法是（）

A.免疫荧光法

B.免疫酶标记法

C.细胞毒试验

D.放射免疫测定法

E.补体结合试验

如图所示是X、Y、Z三种物质的溶解度曲线．在某温度下，把三种物质各25g，分别溶解在等质量的水中，所得三种溶液都恰好饱和，则所需水的质量应是（　　）

A．100g

B．150g

C．200g

D．无法计算

如果电流强度不随时间而变，这种电流就称为（）。

A、直流

B、交流

C、感应电流

D、涡流