早教吧作业答案频道 -->英语-->
听下面一段独白，回答第17和第20四个小题17．Whatrequirementneedthephotosmeet？A．TheymustbeincolorB．TheymustbetakenonholidayC．Theymustbeaboutfamilylife18．Whatisthefirstprize？A．Atwo-weekholiday
题目详情
听下面一段独白，回答第17和第20四个小题
17．What requirement need the photos meet？
A．They must be in color B．They must be taken on holiday
C．They must be about family life
18．What is the first prize？
A．A two-week holiday B．A 500-pound camera C．Two plane tickets to Jamaica
19．When will the result of the competition come out？
A．On August 15th B．On August 31th C．On September 15th
20．What does the speaker remind the competitors to do？
A．Write their information on the back of the photos
B．Take part in next week's sports competition
A．C．Get their photos back after the competition．
17．What requirement need the photos meet？
A．They must be in color B．They must be taken on holiday
C．They must be about family life
18．What is the first prize？
A．A two-week holiday B．A 500-pound camera C．Two plane tickets to Jamaica
19．When will the result of the competition come out？
A．On August 15th B．On August 31th C．On September 15th
20．What does the speaker remind the competitors to do？
A．Write their information on the back of the photos
B．Take part in next week's sports competition
A．C．Get their photos back after the competition．
▼优质解答
答案和解析
略
看了听下面一段独白，回答第17和第...的网友还看了以下：
若n阶方阵A与B满足AB+A+B=E（E为单位矩阵）.证明（1）B+E为可逆矩阵（2)(B+E)^ 2020-04-05 …
（2014•和平区二模）己知a，b∈R，i是虚数单位，若(1+ai)(1−i)b+i=2-i，则a 2020-05-13 …
i m p o s s i b e 2020-05-14 …
设a=1+i/1-i,b=|√3-i|,z1=a+bi,z2=a+b(i+1),其中i为虚数单位. 2020-06-03 …
设A,B是三阶方阵,若满足等式A+BA=B,求(A-I)^(-1)是什么?我是这样算的,BA-B= 2020-06-18 …
设A，B都是n阶方阵，已知|B|≠0，A-E可逆，且（A-E）-1=（B-E）T，求证A可逆． 2020-06-18 …
用所给的字母组成一个单词，使句子合理通顺。1:I(b,d,i,e,c,m,l)a 2020-06-30 …
A、B、E为矩阵,A=1/2(B+E),当且仅当B^2为何值时,A^2=A?填空题,E应该为单位矩 2020-06-30 …
设a,b属于R,i是虚数单位,若a/(1-i)+b/(1-2i)=5i/(3+i),则a+b=?怎 2020-07-16 …
已知a,b属于R,i为虚数单位若(a/1-i)+(b/1-2i)=(5i/3+i)求a+b的值 2020-11-01 …