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设随机变量 x与y相互独立，且 X～N（0，1)，Y～N（0，4)，则D（2X+Y)=_______.

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在Excel2003单元格中，输入“=3＞=5”，显示结果为

A. TRUE
B. 3=5

A小畦灌＞长畦分段灌＞隔沟灌
B小畦灌＞隔沟灌＞长畦分段灌
C长畦分段灌＞小畦灌＞隔沟灌
D长畦分段灌＞隔沟灌＞小畦灌

I was born in one of the the most interesting cities in Malaysia. It has a rich, colourful history and many parts of the city have hardly changed at 【C1】 during the last five centuries. However, nowadays, it is 【C2】 longer the trade centre that it once 【C3】 it is difficult to imagine that at one time its harbour 【C4】 to be visited by over 2,000 ships a week, and that the huge warehouses along the quayside would have 【C5】 full of spices and silks, jewels and tea.
The old city centre is small, which 【C6】 it very easy to explore 【C7】 foot. A river neatly divides the town, 【C8】 only physically but in spirit too. On one side, you find a 【C9】 many grand houses, but immediately you cross the river, you find【C10】 in ancient Chinatown, which is where you really 【C11】 a step back into the past.
From the earliest times, this has been the heart of the city and it's fun to wander through the colourful, noisy backstreets. As 【C12】 as the streets that sell a wide 【C13】 of clothes and shoes, there are also streets famous 【C14】 high quality antiques. Unfortunately, most of the bargains disappeared many years ago. However, 【C15】 you look around carefully, you could still come across an interesting souvenir.
【C1】

听力原文： There are several different kinds of insurance and many people purchase insurance for various purposes. Insurance provides protection against risks. But not all people know a lot about insurance. So I’ll introduce four most common insurance today. They are: automobile insurance, homeowner’s insurance, health insurance, and life insurance.
Automobile insurance: drivers must be financially responsible for any damage done by their vehicles. This means that if you are involved in an accident in which someone is injured or there is significant property damage, you must be able to pay for the damages. You can buy different types of automobile insurance including liability insurance and collision insurance. Because this can be very costly, drivers purchase automobile insurance.
Homeowner’s insurance: because most homeowners could not afford to replace their home if it were destroyed, they carry insurance to cover. the value of the home and its contents. A homeowner’s policy may include protection against any or all of the following: fire, lighting, windstorms, explosions, theft, and flood. Health insurance: health insurance will pay for medical bills in the event of an accident causing injury. There are three basic categories of health-care coverage. Major medical-expense coverage is designed to protect against large unpredictable medical expenses. Disability income insurance provides cash benefits to the policyholder for living expenses if the policyholder is unable to work.
Life insurance: life insurance is purchased to protect dependents of the policyholder in the event of his or her death. There are four basic types of life insurance. Term insurance insures the lite of the policyholder for a specific period of time, usually one to five years. Whole life insurance builds up a cash value over the years. Endowment life insurance provides both protection and savings, with most of the emphasis on savings. The primary purpose of this type is to build up savings for some future purpose such as supplementary income during retirement.
？You will hear an introduction of insurance.
？As you listen, for questions 1--12, complete the notes, using up to three words or a number.
？You will hear the recording twice.
INSURANCE
NOTES
Automobile Insurance:
1. Drivers must be financially responsible for any damage done by their
2. Because this can be very costly, drivers
3. You can buy different types of automobile insurance including liability insurance and
Homeowner’s Insurance:
4. They carry insurance to cover the value of the home
5. A homeowner’s policy may include protection against any or all of the following: fire, lighting, windstorms, explosions
Health Insurance:
6. Health insurance will pay for medical bills in the event of an
7. There are three basic categories of
8. Major medical-expense coverage is designed to protect against large
Life Insurance:
9. Term insurance insures the life of the policyholder for a specific
10. It provides both
11. With most of the
12. The primary purpose of this type is to build up savings for some future purpose such as supplementary