伤寒最严重的并发症是（）。 A.肠穿孔 B.心肌炎 C.中毒性肝炎 D.肺炎 E.肠

关于戊型肝炎，错误的是 （）

A.抗HEVIgM阳性可确诊

B.HEV是单股正链DNA病毒

C.戊型肝炎主要经血液途径传播

D.戊型肝炎隐性感染者无传染性

E.戊型肝炎不会暴发或流行

下列程序要求用户输入一个年份，并能够判断用户输入的年份是否是闰年，下划线处应填( )。
Sub EnSure()
Dim year As Integer
year=Val(InputBox("请输入年份:"))
If(year Mod 4=0__year Mod 100 ＜＞ 0)__(year Mod 400=0) Then
Print "您输入的是闰年"
Else
Print "不是闰年，是普通年份"
End If
End Sub

A．And And

B．And Or

C．Or Or

D．Or Or

阅读理解。

     108 cities in China took part in the World Car Free Day on Saturday to promote environmentally

friendly transport and ease increasingly grid-locked city streets.  It's a highlight of a nationwide urban

public transport week. People were urged to take public transport,ride bikes or walk.

      To help out,more than 200 new buses took to the streets. And the Beijing Subway laid on 10 more

trains for rush hour.

      A Beijing resident said,"Today is car free day,and I do find the traffic much better and the bus can

go much faster. "

      Another resident said,"I spent only half an hour going to work. It took me twice as long before,and

I can find seat on the bus today. "

      But in some areas not signed up for traffic control,endless lines of cars can still be seen.

     Some people say they just can't do without their cars.

     Another Beijing resident said,"Some people are willing to give up driving,but on certain days when I

have to take my child to school or weekend classes,the public transport is so bad that I can't do it without a car. "

       But the concept of "green"traffic is catching on. People say they believe it's the first and honest step

in facing the serious traffic and environmental problems.

      A driver said,"The car free day has a very important symbolic meaning. It does not mean that we must give up cars. It is to promote a concept,to encourage more people to contribute to the protection of the

environment. "

     The Ministry of Construction calculates"Car Free Day"will cut 3,000 tons of emissions and save 33

million liters of gasoline.  And it's planning more frequent activities to raise public consciousness of energy

conservation and environmental protection.   

1. The best title of the passage is possibly _______ 

A. Private cars are banned in cities    

B. Car-free Day pushes"green"transport

C. Residents can't do without cars    

D. Residents should ride bikes on Car-free Day 

2. Car-free Day will bring the following benefits except _______.

A. saving quite a lot of energy          

B. raising public consciousness of environmental protection

C. improving road traffic                

D. facing more serious traffic problems

3. What do you think is possibly the author's attitude towards the Car-free Day?

A. Positive.      

B. Negative.        

C. Passive.          

D. Critical.

常发生在左侧的是（）

A．中央区

B．外周区

C．移行区

D．整个腺体

E．以上都不是

商检机构可根据需要，对检验的进出口商品加施商检标志或封识。 ( )