对各型癫痫都有效的药物是 A．乙琥胺 B．苯妥英钠 C．地西泮 D．丙戊

雇员受益信托最早出现于（）。

A、英国

B、美国

C、日本

D、法国

     I am a senior in college, and my major is elementary education. But the thing is, even though I am

going to become a teacher I have a horrible fear of giving presentations. My main problem is that I shake, which causes my paper to move when I hold it. Also I feel my heart beating so fast that I almost cannot

hear myself or pay attention to anything else. In my other semesters I only had one presentation which

only lasted for a few minutes. This, however, is my professional semester and there are about three

presentations per class and some of them have to be 30 minutes long! Now I feel like I'm in the wrong

field because of how nervous I become. But the thing is, I have already had students taught and have a lot of experience with children, and when I am around children I am completely comfortable. Children don't

judge people and I just don't get nervous around them. That is why I don't understand why they make us

do so many presentations in front of our peers (同龄人) as if they were children!

     I am just so nervous about getting up in front of my class this semester! I can't stop fearing it and I'm

set for failure. It's strange. I have a good friend in my class and I seem to be more nervous with her being

there than when she is not there! Maybe that's because I don't know or don't really care about the rest of

the students in the class. 

1. The author will have to ____ in his / her future job.

A. deal with freshmen in college

B. deal with students in elementary school

C. make many public presentations in front of his / her peers 

D. work with his / her good friends

2. Which of the following words can best describe the author's feeling when he / she is giving

presentations?

A. Worried.    

B. Tense.    

C. Exciting.    

D. Disappointed.

3. It can be inferred from the last paragraph that ____.

A. the author only feels nervous when his / her friend is present

B. the author performs better when his / her friend is not there

C. the author is disliked by most of his / her classmates

D. the author is eager to get help and support from his / her friend

4. The text is mainly about ____.

A. how to get rid of the fear of giving presentations

B. an interesting experience of the author in the professional semester

C. stories about the relationship between the author and his / her friend

D. the author's problem of giving presentations

炉缸的上、中、下部为分别设有（）、（）与（）。

胰腺癌最常发生在（）。

A.胰头

B.胰颈

C.胰体

D.胰尾

E.胰体尾

什么是全要素生产率？它有什么作用？