所谓传染源是指（） A.能够携带病原体造成疾病传播的动物 B.能_爱下问搜题

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问题单项选择题 A1型题

所谓传染源是指（）

A.能够携带病原体造成疾病传播的动物

B.能够排出病原体的人或动物

C.病原体赖以生长繁殖的人或动物

D.病原体赖以生长繁殖的物体

E.体内有病原体生长繁殖并能排出病原体的人或动物

答案

参考答案：E

阅读理解

阅读下面的短文，选择正确的答案。
What is a good friend like?

Molly	May19, 2009, 9:32pm I think a good friend likes to do the same things as me. Jack is my best friend. We both like to play the guitar after class.
Holly	May19, 2009, 9:40pm For me, a good friend makes me laugh. He or she likes to talk about something interesting and funny.
Maria	May19, 2009 9:45pm I think a good friend should be a good listener ,and he or she should keep secrets for me, that's more important for me.
Sally	May19, 2009, 9;55pm In my opinion, a good friend should have cool clothes, and he or she is popular in school. He or she should be good at sports, because I like doing sports.
Toby	May19, 2009, 10:16pm As we are students, I think a good friend should be good at schoolwork. Then we can help each other, learn from each other.
Jim	May19,2009,10:30pm I think a good friend should help each other. When I am in trouble, Kelly always help me.

1. Who can be Holly's friend?
    A. Someone who is very quiet.
    B. Someone who likes to talk about interesting things
    C. Someone who is good at schoolwork.
    D. Someone who is very cool and popular.
2. Which is Maria's opinion about a good friend?
    A. A good friend should like telling jokes.
    B. A good friend should study with her.
    C. A good friend should help her.
    D. A good friend should keep secrets for her.
3. Who wants his or her friends to do well in the schoolwork?
    A. Molly
    B. Toby
    C. Jim
    D. Sally
4.What does Jack like?
    A. Playing the guitar
    B. Sports
    C. Making others laugh
    D. Schoolwork

单项选择题

既可制粒又可整粒的设备是（）。

A.槽形混合机

B.V形混合筒

C.摇摆式颗粒机

D.球磨机