排洪涵洞的最小孔径不应小于（）。A、1m B、1.5m C、2m D、2.5m

下图中a为北半球的一段纬线，b为晨昏线，c为经线，A，B两点为纬线与晨昏线的交点，M，P为经线与晨昏线、纬线的交点。据图回答1~2题。

1、如果M，P两点重合，且离北极点距离最大，c为东经120°，则[ ]

A、北京刚好日出

B、上海市正处在上班高峰期

C、M点的夜长0小时

D、P点昼长12小时

2、若一年之内，M点在极点与P点之间来回移动，则当M，P两点相距最远时[ ]

A、地轴与晨昏线之间的夹角最大

B、蒙古—西伯利亚高压强盛

C、太原市可能秋高气爽

D、太阳直射南回归线

把下面算式改成除数是整数的除法算式．

①12.3÷3.9=______÷______

②47.8÷0.54=______÷______．

境外证券经营机构驻华代表处必须依法设立且满3年，方可申请成为证券交易所的特别会员。（　　）

阅读理解

     You don't need millions to be happy.In fact,at The Happiness Institute in Australia,a couple of

hundred dollars may be enough.

    The institute opened its door last year,and,since then,men and women of all ages have been paying

$200 an hour for lessons on how to feel great.

     "You can actually increase your happiness levels.That's what we teach," said Timothy Sharp,founder

of the institute.

     Experts say that only about 15 percent of happiness comes from income,assets and other financial

factors.As much as 85 percent comes from things such as attitude,life control and relationships.

     Most of us are significantly better off financially than our parents and grandparents,but happiness

levels haven't changed to reflect that.

     Studies show that once the basic needs of shelter and food are met,additional wealth adds very little

to happiness.

     Many decades ago,the "sage of Baltimore,Maryland",editor H L Mencken,defined (下定义) wealth

as earning $100 more than your "wife's sister's husband".

     Behavioral economists now say part of the reason we are richer but not happier is that we compare

ourselves to people better off materially.

     "The argument is that if you want to be happy there's a very simple thing you can do:

     Compare yourself to people who are less well_off than you-poorer,smaller house and car," said

Sharp.

     The Happiness Institute aims to show you how to overcome these unhappiness factors by focusing

on "more than just your bank account".

     "If I compare myself to Bill Gates then I'm always going to be down," said Sharp.

     A better thing to compare with,he said,might be Kerry Packer,Australia's richest person who has

had a kidney transplant (肾脏移植) and heart surgery in recent years.

1. Which of the following statements is TRUE according to the passage?

A. You can increase your happiness levels by attending the classes at The Happiness Institute.

B. Most of us are happier than our parents or grandparents since we earn more.

C. Earn $100 more than your wife's sister's husband if you want to be happy.

D. Both Bill Gates and Kerry Packer are examples of those who are extremely rich but

     obviously unhappy.

2. The underlined phrase has the same meaning as the word________.

A. healthy  

B. unhealthy  

C. free  

D. wealthy

3. The author wrote the passage to tell us________.

A. happiness is everything

B. wealth is the foundation of happiness

C. we can have fun at The Happiness Institute

D. money doesn't always mean happiness

4. According to the passage,happiness mainly depends on________.

A. income,assets and other financial factors

B. additional wealth apart from the satisfaction of the basic needs of shelter and food

C. things like attitude,life control and relationships

D. society development

风枪铆接通常应先慢后快，先慢的目的是先将钉杆打粗使其（）。

A.填满钉孔

B.直径变大

C.强度降低

D.产生变形