题目内容

谈谈如何培养幼儿的记忆力

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北方某小区详细规划方案(如图所示)总用地25.69hm2，试指出本小区规划方案中存在的问题。

阅读以下说明和Java代码，将应填入(n)处的字句写在答题纸的对应栏内。
说明
类Queue表示队列，类中的方法如下表所示。
类Node表示队列中的元素；类EmptyQueueException 给出了队列操作中的异常处理操作。
Java 代码
public class TestMain{ // 主类
public static void main(String args[]) {
Queue q = new Queue();
q.enqueue("first!");
q.enqueue("second!");
q.enqueue("third!");
(1) {
while(true)
System.out.println(q. dequeue());
}
catch((2)) (}
}
}
public class Queue { // 队列
Node m_FirstNode;
public Queue() { m_FirstNode = null; }
public boolean isEmpty() {
if(m_FirstNode == null) return true;
else return false;
}
public void enqueue(Object newNode) {// 入队操作
Node next = m_FirstNode;
if(next==null) m_FirstNode = new Node(newNode);
else {
while(next.getNext() != null) next = next.getNext();
next.setNext(new Node(newNode));
}
}
public Object dequeue() (3) {// 出队操作
Object node;
if (isEmpty())
(4); // 队列为空，抛出异常
else {
node = m_FirstNode.getObject();
m_FirstNode = m_FirstNode.getNext();
return node;
}
}
}
public class Node { // 队列中的元素
Object m_Data;
Node m_Next;
public Node(Object data) { m_Data = data; m_Next = null; }
public Node(Object data, Node next) { m_Data = data; m_Next = next; }
public void setObject(Object data) { m_Data = data; }
public Object getObject0 { return m_Data; }
public void setNext(Node next) { m_Next = next; }
public Node getNext() { return m_Next; }
}
public class EmptyQueueException extends (5) { // 异常处理类
public EmptyQueueException0 {
System.out.println("队列已空 ! ");
}
}

For this part, you are allowed 30 minutes to write a composition on the topic Is Job-hopping Preferable？ according to the following outline (given in English). Your composition should be no less than 120 words. Remember to write your composition on the Answer Sheet 1 clearly and neatly.
1. Some people tend to stick to one job in their lives.
2. Other people prefer changing jobs constantly.
3. My opinion.

关税是由海关根据国家制定的有关法律，以进出关境的货物和物品为征税对象而征收的一种商品税。()