Two weeks after the Second World War(战争) began, Peter wanted to join the army(军队), but he was only 16 years old, and boys were allowed to join only if they were over 18. So when the army doctor examined him, he said that he was 18. But Peter's brother Bill had joined the army a few days before, and the same doctor had examined him, too. This doctor remembered Bill's family name, so when he saw Peter's papers, he was surprised.
"How old are you?" he said.
"Eighteen, Sir. "Said Peter.
"But your brother was eighteen, too. " said the doctor, "Are you twins?"
"Oh, no, Sir," said Peter, and his face went red," My brother is five months older than me. "
根据短文内容，选择最佳答案，并将其字母标号填入题前括号内。
1. When did the story happen?
A. Before the Second World War.
B. During the Second World War.
C. Before the First World War.
D. During the First World War.
2. In fact, how old was Peter?
A. 18 B. 17 C. 16 D. 15
3. What did Bill do at that time?
A. He was a doctor. B. He was a soldier.
C. He was a student. D. He was a teacher.
4. How did the doctor feel when he saw Peter's papers?
A. He was surprised. B. He was mad.
C. He was excited. D. He was disappointed.
5. What is the Chinese meaning of "examined" in the passage?
A．考试 B．照顾 C．训练 D．检查