—She may not be free today.—________, well have to put the meeting off.

答案查看网，轻松搜题/搜资源

【单选题】【消耗次数：1】

① If may

② If not

③ If she may not

④ If she may not be free today

参考答案：

复制

纠错

相关题目

【单选题】 —She may not be free today.—________, well have to put the meeting off.

① If may

② If not

③ If she may not

④ If she may

查看完整题目与答案

【单选题】 A: May I use your computer this afternoon? B: Im sorry, but I have to finish typing this term paper today. A: [填空].

① It doesnt matter

② Thank you just the same

③ Do as you please

④ Never mind

查看完整题目与答案

【单选题】 I don’t know the reason ___________ she is absent again today.

① that

② why

查看完整题目与答案

【单选题】 It may only be through repeated experiments _______ a baby will come to accept the idea _______ other people can have different views from what he or she has.

① how;which

② how;that

③ that;that

④ which;which

查看完整题目与答案

【单选题】 15. She had ____ to do, so she was free.

① something

② anything

③ everything

④ nothing

查看完整题目与答案

【单选题】 ——May I put my luggage on the seat beside you, sir? ——____.

① Sure，withpleasure

② Okay，pleaseyourself

③ Well，nevermind

④ Yes，helpyourself

查看完整题目与答案

【判断题】 A: May I put my books here? B: Yes, put them please.

① 正确

② 错误

查看完整题目与答案

【单选题】 -May I help you?-___. Do you have any apple juice?

① Sure

② Thank you

③ No, thanks

④ I don’t think so

查看完整题目与答案

【单选题】 30. -May I borrow these three magazines? -____. You may keep them for two weeks.

① Of course not

② By all means

③ I’m afraid not

④ It’s up to you

查看完整题目与答案

【单选题】 May [填空] speak to Jack?

① I

② me

③ us

④ we

查看完整题目与答案

随机题目

【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}.

查看完整题目与答案

【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.

查看完整题目与答案

【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}.

查看完整题目与答案

【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)。

查看完整题目与答案

【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}.

查看完整题目与答案

【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}.

查看完整题目与答案

【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}

查看完整题目与答案

【单选题】设 R={0,10,20,31,21,32,3}，则{1,2}在关系R下的像R[{1,2}]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}.

查看完整题目与答案

【单选题】下面哪个不是从集合 A={1, 2}到 B={1}的二元关系：

① R1=<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/E566BCAE77E174BC709DE66706F41CEC.png data-tex=\emptyset />;

② R2={1,1

③ R2={2,1

④ R3={1,2}.

查看完整题目与答案

【单选题】设 A = {1, 22, 43, 3}，B = {1, 32, 44, 2}，则差关系A-B的域fld(A-B)等于：

① {1,3};

② {1,2,4};

③ {1,2,3};

④ {2,3}.

查看完整题目与答案