某班从6名班干部(其中男生4人,女生2人)中选3人参加学校学生会的干部竞选。 (1

题型:问答题

问题:

某班从6名班干部(其中男生4人,女生2人)中选3人参加学校学生会的干部竞选。
(1)设所选3人中女生人数为ξ,求ξ的分布列及数学期望;
(2)在男生甲被选中的情况下,求女生乙也被选中的概率。

考点:教师招聘考试中学教师招聘笔试教师公开招聘考试小学数学
题型:问答题

突然视力下降无眼痛常见于

A.缺血性视神经病变

B.葡萄膜炎

C.急性闭角型青光眼

D.白内障

E.弱视

题型:问答题
King’s College Summer School
King’s College Summer School is an annual(每年的)training program for high school students at all levels who want to improve their English.Courses are given by the teachers of King’s College and other colleges in New York.Trips to museums and culture centers are also organized.This year’s summer school will be from July 25 to August 15.More information is as follows:
Application(申请)date
●Students in New York should send their applications before July 18,2007.
●Students of other cities should send their applications before July 16,2007.
●Foreign students should send their applications before July 10,2007.
Courses
●English LanguageSpoken English:22 hoursReading and Writing:10 hours
●American History:16 hours
●American Culture:16 hours
Steps
●A letter of self-introduction
●A letter of recommendation(推荐)
*The letters should be written in English with all the necessary information.
Cost
●Daily lessons:$200
●Sports and activities:$100
●Travels:$200
●Hotel service:$400
*You may choose to live with your friends or relatives in the same city.
Please write to: Thompson,Sanders1026 King’s StreetNew York,NY 10016,USAE-mail: KC-Summer-School@yahoo.com
小题1:You can most probably read the text in________.
A.a newspaperB.a travel guide
C.a textbookD.a telephone book
小题2:Which of the following is true about King’s College Summer School?
A.Only top students can take part in the program.
B.King’s College Summer School is run every other year.
C.Visits to museums and culture centers are part of the program.
D.Only the teachers of King’s College give courses.
小题3:If you are to live with your relatives in New York,you will have to pay the school ________.
A.$200B.$400
C.$500D.$900
小题4:What information can you get from the text?
A.The program will last two months.
B.You can write to Thompson only in English.
C.As a Chinese student,you can send your application on July 14,2007.
D.You can get in touch with the school by e-mail or by telephone.
题型:问答题

路基是道路工程重要组成部分,由于受力及外界环境影响复杂,要求其不但有足够强度和整体稳定性,还应有( )。

A.足够的水温稳定性

B.耐磨性

C.合理断面形式和尺寸

D.吸水性

E.表面子整性

题型:问答题

关于肩关节周围炎,下列哪项是错误的()

A.本病是关节周围多种软组织的慢性炎症

B.特征是肩痛,活动限制和肌肉萎缩

C.外展,外旋受限最严重

D.病变结果为关节无菌性坏死

E.本病能自愈

题型:问答题

键盘电路中,为了有效确认有无按键,需要进行______。

更多题库