司机在开车时，必须经常注意（）等有无障碍物，并按规定信号行车。A.水沟 B.巷道 C

该企业2004年应纳企业所得税( )万元。

A．305.33

B．384.2

C．326.95

D．328.63

流行性感冒与普通感冒的区别在于（）

A.发病季节不同

B.呈明显大流行

C.全身症状轻

D.呼吸道症状重

E.白细胞计数下降

People often think that having a million dollars would make all their dreams come true. There are TV game shows that give contestants the chance to become millionaires. When asked the question "What would you do with a million dollars?", most people tend to give similar answers: “Quit my job.”, "Buy my dream house," or “Go traveling.” Twenty years ago, it was possible to realize these dreams. However, things are not so easy today.

In many developed countries, the cost of living is higher than ever. Over the last twenty years, for example, housing prices in many of the world's cities have soared. In the U. S., luxury homes in the state of Arizona sold for about $ 800, 000 in 1995. These same homes now cost more than $ 1.5 million. Now, because more people live in the area, the cost of property has risen.

Apartments in many city centers are also more expensive now than in the past. Today, people want to be closer to their workplace, and many are now moving back into the city center. As a result, living in or near this area costs more than ever. Apartments in London's Mayfair district or in Manhattan in New York City often sell for over a million dollars.

Inflation is another important reason for the rise in the cost of living. Over the last 150 years, as prices have gone up, the value of money has gone down, so we now need more money to buy things. In 1850, for example, $50,000 had as much buying power as $1 million dollars does today. Of course, people now earn more money than they did 150 years ago, but they also spend more on necessities such as food, medicine, and housing.

In order to live well after you stop working, you should begin saving for retirement early. Experts suggest that after you retire, you will need 75 percent to 80 percent of your salary to live on every month. This calculation assumes that you have no mortgage on a house to continue paying, or any other major expenses.

Due to increased demand for housing, higher inflation, and longer life expectancy, a million may not be enough to live on. To be able to retire early, travel the world, and build your dream home, you may have to appear on that game show and win more than once!

46. What is the main cause of high housing price?

A. People generally make more money today.

B. There are more luxury homes than apartments.

C. There is less housing available there for sale or rent.

D. People would rather live in the suburbs than in the city.

47. The word "inflation" in the 4th paragraph refers to _____

A. the amount of money required for life's necessities

B. a continuing increase in prices over time

C. a bank loan for a house or piece of land

D. things that one must pay for regularly

48. If you make $ 4,000 per month, you will need _______ per month after you retire.

A. $2,250~$2,400        B. $ 3,000~$ 3,200

C. $3,500~$3,750        D. $2,550~ $ 2,700

49. What does the underlined sentence mean in the last paragraph?

A. You will be so lucky that you can win another million dollars.

B. Don't expect too much for just a million dollars that cannot change your life completely.

C. A million dollars is too little to travel around the world.

D. To win another million dollars is the only way to make you live better after retirement.

50. The passage mainly tells us _______.

A. what a million dollars can buy

B. higher housing prices have become a social problem to deal with

C. how much money you will need in order to live well after retirement

D. we should not neglect the fact that money may not be as that much as before

8个月龄婴儿，因辅食添加不当，腹泻二天，大便呈稀水样，每天7～8次，伴呕吐，吐出物味酸臭，伴尿少，精神萎靡，下列哪项处理不必要()

A．血气分析

B．大便常规

C．补液

D．洗胃

E．查血电解质

四支试管中加入等量的的同种植物的圆叶片和不同溶液，甲乙试管放在光照条件下，丙丁两组放在相同温度的无光条件下。一段时间后观察，对现象描述和分析正确的是（）

A.甲试管中圆叶片不下沉，原因是光合作用强度大于呼吸作用强度

B.乙试管中圆叶片下沉，原因是不能进行光合作用

C.丙试管中圆叶片不下沉，原因是有氧呼吸消耗的氧气来自于外界的空气中

D.丁试管中的圆叶片下沉，原因是叶片无法进行有氧呼吸，只进行无氧呼吸