重度低渗性脱水失盐量为A．0.5 g/kg B．0.5～0.75 g/kg C．0.

二尖瓣血流频谱哪项不对()

A．系收缩期正向血流频谱

B．呈双峰型

C．正常时E峰流速大于A峰

D．呈空心层流

E．在老年人中可表现为A峰>E峰

阅读理解。

     Barditch High School decided to an All-School Reunion. Over 450 people came to the event. There

were tours of the old school building and a picnic at Confederate Park. Several former teachers were

on ands to tell stories about the old days. Ms. Mabel Yates, the English teacher for fifty years, was

wheeled to the Park.

     Some eyes rolled and there were a few low groans(嘟囔声)when Ms.Yates was about to speak.

Many started looking at their watches and coming up with excuses to be anywhere instead of preparing

to listen to a lecture from and old woman who had few kind words for her students and made them work

harder than all the other teachers combined.

     Then Ms. Yates started to speak:

     "I can't tell you how pleased I am to be here. I haven't seen many of you since your graduation, but

I have followed your careers and enjoyed your victories as well as crying for your tragedies. I have a

large collection of newspaper photographs of my students. Although I haven't appeared in person, I

have attended your college graduations, weddings and even the birth your children, in my imagination."

     Ms. Yates paused and started crying a bit. Then she continued:

"It was my belief that if I pushed you as hard as I could, some of you would succeed to please me and

others would succeed to annoy me. Regardless of our motives, I can see that you have all been

successful in you chosen path."

     "There is no greater comfort for an educator than to see the end result of his or her years of work.

You have all been a great source of pleasure and pride for me and I want you to know I love you all

from the bottom of my heart."

     There was a silence over the crowd for a few seconds and then someone started clapping. Tee

clapping turned into cheering, then into a deafening roar(呼喊). Lawyers, truck drivers, bankers and

models were rubbing their eyes or crying openly with no shame all because of the words from a long

forgotten English teacher from their hometown.

1. What activity was organized for the school reunion?

A. Sightseeing in the park.

B. A picnic on the school playground.

C. Telling stories about past events.

D. Graduates' reports in the old building.

2. What can be inferred from Paragraph 2?  

A. Some graduates were too busy to listen to Ms. Yates' speech.

B. Many graduates disliked Ms. Yates' ways of teaching.

C. Some people got tired from the reunion activities.

D. Most people had little interest in the reunion.

3. We can learn from Ms. Yates' speech that she _____________.

A. kept track of her students' progress

B. gave her students advice on their careers

C. attended her students' college graduations

D. went to her students' wedding ceremonies

4. What was Ms.Yates' belief in teaching teenagers?

A. Teachers' knowledge is the key to students' achievements.

B. Pressure on students from teachers should be reduced.

C. Hard-pushed students are more likely to succeed.

D. Students' respect is the best reward for teachers.

5. Which of the following can best describe Ms. Yates?

A. Reliable and devoted.

B. Tough and generous.

C. Proud but patient.

D. Strict but caring

1999年《宪法修正案》规定：“国家对个体经济、私营经济实行()。”

A.帮助、鼓励和管理

B.鼓励、监督和管理

C.引导、鼓励和管理

D.引导、监督和管理

设在工程中定义了如下类型：
Type stutype
ino As Integer
strname As String*20
strsex As String* 1
smark As Single End Type
在窗体上正确使用这个类型的是下列哪个操作( )。

A．Sub Commandl_Click0
Dim student As Stutype
With student
.ino = 12
. strname = smith
.strsex =
.smark = 89
End With
End Sub

B．Sub Commandl_Click0
Dim student As Stutype
With student
.ino = 12
.strname = "smith"
.strscx = "男"
.smark = 89
End With
End Sub

C．Sub Commandl_Click0
Dim student As Stutype
With Stutype
ino = 12
.strname = "smith"
.strsex = "男"
.smark = 89
End With
End Sub

D．Sub Command1 _Click()
Dim student As Stutype
With student
.ino = 12
.strname = "smith"
.strsex = "男"
.smark = 89
End student
End Sub

论述混凝土裂缝表面涂抹法的操作内容。