批量证券转托管可分为（）两种方式。 A.整体转托管和批量报盘转托管 B.整体转托管和

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.

解方程：

①x²-25=0；

②x²+x-6=0．

外源化学物致突变类型不包括（）

A.基因突变

B.基因组突变

C.染色体畸变

D.二聚体

E.非整倍体和多倍体

浮小麦具有的功效是：（）

A.收敛止血

B.益气止汗

C.涩精止带

D.涩肠敛汗

E.止血止汗

在恩格尔系数比较高的国家或地区，主要需求是生活必需品。