简述运用组合方法时应注意的问题。

抽样误差指的是（）

A.测量个体数据之间的差别

B.测量个体数据和样本指标的差别

C.测量个体数据和总体指标的差别

D.研究总体指标之间的差别

E.抽取的样本指标与总体指标的差别

患者男，52岁，患高血压病5年，吸烟35年，少量饮酒，喜高盐、高脂食物。今日来院复查，测血压152/97mmHg。

对该患者进行健康教育指导时应注意（）

A.定时测量血压

B.戒烟

C.戒酒

D.饮食指导

E.按时服用降压药物

F.加强锻炼

阅读理解。

     Some people were eating and drinking in a coffee house. A young woman was sitting alone at a table. She

was wearing a beautiful diamond necklace. There was an ugly man at a table not far from her. He was looking

at her necklace all the time.

     Suddenly the lights went out. The coffee house was in darkness. The woman started to shout. She was

very frightened. A few minutes later the lights came on again. The woman was crying. Her necklace was

missing.

     The manager quickly closed all the doors. He telephoned the police. No one could get out of the coffee

house. The policemen soon came. The police inspector told his men to search everyone. The necklace was not

on anyone. They then searched the whole coffee house. The necklace couldn't be found.

     The police inspector then looked at the faces of all the people in the coffee house. He saw the ugly man and

looked at the man carefully. He went up to the man and picked up the bowl of soup that was on his table. He

then poured the soup into a glass. The necklace fell out. The policemen caught hold of the man and took him

away. The young woman was happy to get back her necklace.

1. A young woman lost her necklace in _____ .

A. a hospital

B. a shop

C. a coffee house

D. a restaurant

2. The manager closed all the doors and _____ .

A. searched everyone in the coffee house

B. searched the whole coffee house

C. telephoned the police

D. looked at all the people in the coffee house

3. The police inspector found the necklace in _____ .

A. a cup of coffee

B. a bowl of rice

C. a glass of milk

D. a bowl of soup

4. The necklace was stolen by _____ .

A. a beautiful girl

B. an old woman

C. a young student

D. an ugly man

下列程序是将数组a的元素倒序交换，即第1个变为最后一个，第2个变为倒数第2个，设数组中有10个元素。完成下列程序。
Private Sub Backward(a())
Dim i As Integer, Tmp As Integer
For i=1 To 5
Tmp=a(i)
______
______
Next i
End Sub

一个意大利观光团到北京参观游览，游览故宫当天，约11点左右，领队和导游小张说客人对团队便餐不是很喜欢，希望中午能吃西餐，并希望晚上能额外安排去全聚德吃烤鸭，由于生活作息不同，客人对于晚上5、6点吃饭不是很适应，要求晚上吃烤鸭能安排在9点以后，问小张应该怎么办？P120