设X的分布函数为 求P{0.4＜X≤1.3},P{X＞0.5},P{1.7＜X≤2}.

Why will the woman stop by the professor's office on Friday morning？

A．To return the video to the professor.

B．To get the video from the professor.

C．To hand in an assignment to the professor.

D．To discuss the handouts with the professor.

Why will the woman stop by the professor's office on Friday morning？

A．To return the video to the professor.

B．To get the video from the professor.

C．To hand in an assignment to the professor.

D．To discuss the handouts with the professor.

Why will the woman return to the professor's office next week？

A．To turn in a draft of her essay for review.

B．To introduce herself to the dean of the College of Science.

C．To collect her scholarship application materials.

D．To pick up a letter from the Women in Sciences committee.

Why does the student go to the professor's office？

A．To change his schedule

B．To apply for a job

C．To introduce himself

D．To help the professor

Why does the student come to the professor's office？

A．To discuss her grade in her last class.

B．To inquire about auditing a class next term.

C．To thank her professor for a good class.

D．To ask questions about her thesis.

es the womn hve to chnge her flight in Mdrid There’s no direct flight. B．There’s no setvilble on direct flight. C．She wnts to leve tomorrow morning. D．She will contct some peoplet Mdrid.

A．There’s no direct flight．

B．There’s no seat available on direct flight．

C．She wants to leave tomorrow morning．

D．She will contact some people at Madri

D．

听力原文：W: Excuse me, Professor Hill, may I ask you a few questions？

M: Yes, of course, But I'm sorry I have a class to attend. Why don't you come in my office hours, that's 4 to 5 p.m, Monday, Thursday and Friday？

Why can't Professor Hill answer her questions now？

A．He doesn't have time

B．It's not his office hour.

C．He is too tired after class.

D．He will only be available in the afternoon.

Why was the man in the Student Union Office？

A．To find professor Steinfield.

B．To look for the past test papers.

C．To look for the woman.

D．To look for an aspirin for his headache.

Why was the man in the Student Union Office？

A．To find professor Steinfield.

B．To look for past test papers.

C．To look for the woman.

D．To look for an aspirin for his headache.