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He sat there, _____ (watch) the children at play.
He sat there, _____ （watch) the children at play.
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更多“He sat there, _____ (watch) th…”相关的问题
36.What happened to the writer？
A.the writer could not speak Italian
B.the writer could not find postcards
C.Postcards always spoil the writer
D.Last summer,I went to Italy, could not writing
37.Which of the following statements is true？
A.This summer, the writer went to Italy
B.The writer send 37 cards
C.the writer could speak Italian
D.last summer, the writer went to Italy
38.When did the story happened？
A.this summer
B.last summer
C.last spring
D.this spring
39.Where did the story happened？
A.Italy
B.Newyork
C.Beijing
D.Hongkong
40.How many cards did the writer send？
A.37
B.0
C.6
D.5
Twenty years ago, our classroom was a lot less pleasant.Very old-fashioned.We had fewer window, for example.There were five rows of desks, six desks in a row.Since everything was nailed to the floor, a student sat in the same place all day long.Oh, we had to be very strict.Now students move all over the room.They go to different areas for different subjects, and they write at these movable desks.The students are more mobile, and beca use they’re more mobile, they’re less restless, and because they’re less restless, they are more attentive.At least that’s the theory.And as a matter of fact, we really don’t have many behavior. problems here.
We use a modified open classroom system here at the James.I’ll try to explain what that means.Each student makes a work contract with his teacher.Basically, he agrees to a certain amount of work on a certain project.He hands the work in when he gets it done.He works at his own speed and plans h is own time.If he is particularly motivated in one subject—math, for instance—he can explore the subject more thoroughly than the others.But he must also complete his contract in arts or reading or social science.Freedom within a structured system: that ’s what we are trying to offer.
1.Now, the author of this passage must be in his （）.
A.20’s
B.30’s
C.40’s
D.50’s
2.Now we really do not have many behavior. problems in the classroom because().
A.the students are more mobile and attentive
B.the teachers are more strict
C.the teachers are less strict
D.the students are less attentive and restless
3.The main idea of the third paragraph is about().
A.the characteristic of the modified open classroom system
B.the characteristic of the work contract
C.the freedom of the students
D.the generosity of the teachers
4.In a modifie d open classroom system,().
A.the student needn’t do any home work
B.the student can get more freedom in their study
C.the subject that the student should learn is decided by the teacher
D.there is not any discipline that the student should obey
5.According to the author, the educational system today is().
A.more strict and attentive
B.more pleasant and efficient
C.is similar to the educational system twenty years age
D.is sa tisfied by every teacher and student
利用GPA2.RAW中的数据，可估计出如下方程：
变量sat是SAT的综合分数，hsize是以百人计的学生所在高中毕业年级的学生规模，female是一个性别虚拟变量，而black是一个种族虚拟变量(黑人取值1，其他人则取值0)。
(i)有很强的证据支持模型中应该包括hsize”吗？从这个方程来看，最优的高中规模是什么？
(ii)保持hsize不变，非黑人女性和非黑人男性之间SAT分数的估计差异是多少？这个估计差异的统计显著性如何？
(iii)非黑人男性和黑人男性之间SAT分数的估计差异是多少？检验其分数没有差异的原假设，备择假设是他们的分数存在差异。
(iv)黑人女性和非黑人女性之间SAT分数的估计差异是多少？为了检验这个差异的统计显著性，你需要怎么做？
A.day1=Thu
B.day2
C.day3=Sun=1
D.day4=day2
