甲公司主张乙公司违约，乙公司则主张合同未成立，其理由是自己向甲公司发出的要约已经撤销
题型：单项选择题
问题：
甲公司主张乙公司违约，乙公司则主张合同未成立，其理由是自己向甲公司发出的要约已经撤销。在甲公司可能提出的以下理由中，在以下哪种情形下法院可以认定乙公司撤销要约成立()
A．乙公司在要约中确定了承诺期限
B．尽管乙公司在要约中未定承诺期限，但甲公司接到要约后已在考虑是否要给对方承诺
C．乙公司在要约中要约中明确表示等待甲公司的答复
D．甲公司发出承诺以后才收到乙公司撤销要约的通知
题型：单项选择题
阅读理解。
This is No.12 High School. My friend Dongdong is in this school. Dongdong has long hair, a big nose, a small mouth and big eyes. He is thirteen. He is in Class Two, Grade Seven. He's a good student. He
has two good friends in his school. They are Jim and Jack. They're brothers(兄弟). They are fourteen.
They have small noses, small eyes, but they're very tall(高的). Jim, Jack and Dongdong are in the same
class. Mr. Lee is their(他们的) teacher. They are good friends.
1. Dongdong is in _____.
A. No.2 High School
B. Class 2, Grade 1
C. Class 2, Grade 7
D. Class 2, Grade 8
2. How old is Dongdong? He is _____.
A. fourteen
B. thirteen
C. twelve
D. eleven
3. Mr. Lee is _____.
A. Tiantian's brother
B. Tiantian's teacher
C. Dongdong's teacher
D. Jim's brother
4
. Jim is _____.
A. an English boy
B. an English teacher
C. a Chinese boy
D. Sorry, I don't know
5. Who has big eyes?
A. Jim.
B. Dongdong.
C. Tiantian.
D. Jack.
