【单选题】【消耗次数:1】
Congratulations! You won the first prize in today’s speech contest.
Yes, I beat the others
No, no, I didn’t do it well
Thank you
Dont mention it.
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相关题目
【单选题】 A: Congratulations!You won the first prize in the English speech contest. B: [填空].
①  Yes, I beat the others
②  Thank you
③  No, no, I didnt do it well
④  Its a pleasure
【判断题】 I will help you do it. = I will help you to do it.
①  正确
②  错误
【判断题】 A: How do you like this flat? B: I dont like it.
①  正确
②  错误
【单选题】 -Ann, congratulations! Your cuisine was ?very successful and everyone ______. -Thank you, I just tried my ?best. I am happy to know you enjoyed it.
①  had impressed
②  impressed
③  has impressed
④  was impressed
【单选题】 Well, it’s getting late. I must be going. Thank you again for inviting me to the party.
①  Oh, it’s so late
②  Thank you for coming
③  Oh, so soon?
④  I really had a happy time
【单选题】 --Do you dance? --Yes, I do.--________?--Every weekend.
①  :How hard do you practice
②  :How much do you pay for it
③  :How often do you go dancing
④  :How long do you practice it
【单选题】 “Can I help you?” “Well, I’m afraid the box is too heavy for you, ____ thank you all the same.”
①  and
②  so
③  but
④  or
【单选题】 Tom won the first prize of oral English contest, which is beyond his ______.
①  reputation
②  contribution
③  expectation
【单选题】 A: Are you ready for the test tomorrow? B: [填空] A: Come on, I am sure you will do well.
①  Why do you ask?
②  No. Im afraid not.
③  Sure, no problem.
④  What about you?
【判断题】 A: What do you do? B: I do well in my studies.
①  正确
②  错误
随机题目
【单选题】 设 R={0,10,20,31,21,32,3},则关系R在{0,1}上的限制R?{0,1}等于:
①  {0,20,31,3
②  {1,02,03,02,13,13,2
③  {0,10,20,31,21,3
④  {2,3}.
【单选题】 设 Ri 是 X 上的二元关系, 对于 x∈X 定义集合Ri(x)={y|xRiy}. 如果 X={-4, -3, -2, -1, 0, 1, 2, 3, 4}, 且令R1={x, y|x, y∈X<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/D50FEE5510C853C83F78D440017D8E6B.png data-tex=\wedge />xy},则R1(1) =
①  {1,2,3,4};
②  {2,3,4};
③  { -1,0};
④  { -2, -1}。
【单选题】 设 A = {1, 22, 43, 3},B = {1, 32, 44, 2},则对称差关系A⊕B等于:
①  {1,21,32,43,34,2
②  {2,4
③  {1,21,33,34,2
④  {1,23,3}.
【单选题】 下面哪个是集合 A={2, 3, 4}上的恒等关系:
①  {2,23,34,4
②  {2,22,32,43,23,33,44,24,34,4
③  {2,22,32,43,33,44,4}
④  {2,22,43,34,4}.
【单选题】 设函数f: S<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/F388E7EE9892B38FECEEB653227F230A.png data-tex=\mapsto />S, S=[0, 1], f(x)=x/2+1/4,则它是:
①  是满射不是单射;
②  是单射不是满射;
③  是双射;
④  都不是.
【单选题】 设 R={0,10,20,31,21,32,3},则关系R的二次合成R○R等于:
①  {0,20,31,3
②  {1,02,03,02,13,13,2
③  {0,10,20,31,21,3
④  {2,3}.
【单选题】 下面关于集合的笛卡尔叉积,正确的是:
①  若 A×B<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/CA1DD71FE6BE8B2E9C8429D2E4CFEC56.png data-tex=\subseteq />A×C, 则一定有 B<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/CA1DD71FE6BE8B2E9C8429D2E4CFEC56.png data-tex=\subseteq />C 成立;
②  (A∩B)×(C∩D)=(A×C)∩(B×D);
③  (A∪B)×(C∪D)=(A×C)∪(B×D);
④  (A-B)×(C-D)=(A×C) - (B×D)。
【单选题】 设 A = {1, 22, 43, 3},B = {1, 32, 44, 2},则并关系A∪B的定义域dom(A∪B)等于:
①  {1,2,3};
②  {1,2,3,4};
③  {2,3,4};
④  {3,4,2}.
【单选题】 设 A={1, 2, 4, 6}, 则关系 R={x, y|x, y∈A<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/D50FEE5510C853C83F78D440017D8E6B.png data-tex=\wedge />x/y∈A}等于:
①  A×A - {1,1
②  {1,22,1
③  {1,12,24,46,62,14,24,1
④  {1,22,24,26,2}.
【单选题】 设 A={a,b,c,d}, A上的关系R1={a,aa,bb,d},R2={a,db,cb,dc,b},则合成关系R2○R1等于:
①  {a,aa,ca,d
②  {c,d
③  {a,aa,ba,d
④  {b,cb,dc,b}