施行肾移植时，移植肾放在________，肾动脉与________吻合，肾静脉与__

缩句训练。    

1．那位举止特别的青年正在一丝不苟地画金鱼。  

2．清澈见底的玉泉池里有许多游来游去的金鱼。

3．小女孩感动得流下了热泪。

阅读理解

     An evergreen tree is a Christmas tradition in many American homes. The tree is usually a pine or fir

dressed with lights and other colorful decorations.

     Families might buy a cut tree or go to a tree farm and cut one down themselves. Some people bring a

live tree in a pot into their home for the holidays and then put it back outdoors. Some people rent a

Christmas tree. Companies might bring the same live tree to the same family year after year. Or the tree

might get planted in a park or someplace else where it could help the environment.

     There are some trees that can be reused year after year because they are made of plastic or metal. Or,

instead of a tree, some people have a small, sweet-smelling rosemary (迷迭香) plant, cut to look like a

little Christmas tree.

     Another plant that many people connect with Christmas is the poinsettia (一品红). Poinsettias are

native to Mexico. They can be white or pink, but most are bright red. They are named after the first

American ambassador to Mexico. Joel Poinsett liked them enough to send some back to the United

States. Babies or pets that chew on poinsettias might get sick. But experts say the plant is not as poisonous as some people think.

     Like millions of other houses, the home of America's first president is decorated for Christmas. George Washington's Mount Vernon Estate is in Virginia. Visitors can hear stories about what Christmas was like at Mount Vernon in the eighteenth century. The museum where visitors begin their tour is decorated with

Christmas trees.

1. What is the text mainly about?

A. The customs of Christmas in America.

B. The decoration of Christmas trees.  

C. The tradition of Christmas trees in America.  

D. The history of Christmas in America.

2. It can be inferred from the passage that       .

A. Americans are not allowed to cut a tree for Christmas

B. Americans have various ways to get a Christmas tree

C. a Christmas tree must be planted after it is used

D. every family will change their Christmas trees every year

3. People plant their Christmas trees somewhere after Christmas to       .

A. use it again next year

B. save money on Christmas trees

C. help protect the environment

D. hope for the best in the coming year

4. Joel Poinsett sent some poinsettias back to the United States because       .

A. he wanted to give his people another kind of Christmas trees

B. he wanted his people to remember him

C. he wanted to plant them in his home  

D. he was very fond of them

5. Which of the following is TRUE about poinsettias?

A. American people like them.

B. They are considered to be very poisonous by experts.

C. They are not widely used as Christmas trees.

D. They can only make the old and pets sick.

在制作金属烤瓷桥时，减轻固定义齿桥体力的措施，错误的是（）

A.减少桥体面的颊舌径宽度

B.加大桥体与固位体之间的舌侧外展隙

C.减少面的溢出道

D.避免早接触

E.降低非功能尖斜度

试述大学生情绪情感发展特点？

人工垂直接地体的长度为2.5m时，垂直接地体间的距离及人工水平接地体间的距离宜为（）m。

A、2

B、3

C、5

D、任意