受相关商品价格变动的影响,如果A商品和B商品的关系如下表,则B商品中①②的需求量

题型:选择题

问题:

受相关商品价格变动的影响,如果A商品和B商品的关系如下表,则B商品中①②的需求量应分别是 ________.________ ,这时B商品的生产者经营者一般会____:

[ ]

A.增加 减少 调节生产

B.增加 增加 提高诚信意识

C.减少 增加 降低价格   

D.增加 增加 增加供应量

考点:价格变动对人们生活的影响
题型:选择题
比大小.
40厘米______90毫米5米4分米______510分米0.78公顷______900平方米
4千米5米______4.5千米136-(56+44)______136-56+4486×3÷2______86÷2×3.
题型:选择题

某地区有10万人口,1960年总死亡人数为1000名,已发现的结核病患者有300名,其中男性200名,女性100名。1960年死于结核病者60名,其中男性50名。

该地区结核病的病死率为()。

A.20%

B.6%

C.2%

D.男女相等

E.所给资料不能计算

题型:选择题

下列国家自西向东排列,正确的是(    )

A.缅甸、泰国、老挝、越南

B.越南、老挝、泰国、缅甸

C.越南、泰国、老挝、缅甸

D.缅甸、老挝、泰国、越南

题型:选择题

神经垂体功能减退可致()

A.巨人症

B.呆小症

C.尿崩症

D.侏儒症

E.肥胖症

题型:选择题

阅读理解。

     I'm sure I'm not the only person (my age 15) who hates going to the dentist. Channel 4's late-night

documentary (纪录片) Open wide last Tuesday was excellent for people like me. However, none of my

school friends watched it because they didn't know it was on. Why can't television companies let us know

about such important programmes in advance?

     This pragrammes was important because it showed how methods for helping people with toothache

have developed over the centuries. If you think visiting the dentist today is an uncomfortable experience,

just be grateful you didn't live 200 years ago! Then, the programmes told us, the only cure for toothache

was removing the tooth. There weren't any dentists, so the person who cut your hair also pulled out your

bad teeth, and there was nothing to stop you feeling the pain.

     The programme has also completely changed my attitude to looking after my teeth. My parents were

always saying to me things like, 'Don't eat too many sweets.' And, 'Brush your teeth after meals.' But I

never paid much attention. Now I've seen what damage sugar can do, especially if I don't use a toothbrush

regularly. I'm going to change my habits. Many people would benefit from a repeat of this programme.

Sophie Ashley, Oxford

1. Sophie has written this letter to _____. [ ]

A. complain about the time a television programme was shown

B. ask for more television programmes designed for school children

C. advise people to watch a particular television programme

D. persuade a television company to show a programme again

2. A reader can find out from this letter _____. [ ]

A. how to encourage young people to take care of their teeth

B. where to get information about future television programmes

C. what kind of subjects young people enjoy studying at school

D. which television channel shows the most interesting programmes

3. What did Open wide say about toothache?[ ]

A. In the past, nobody could make it stop.

B. Dentists used to help people who had it.

C. Hairdressers have it more than other people.

D. Ways of curing it have changed.

4. What does Sophie think about her parents now? [ ]

A. They don't know as much as her about teeth.

B. Their advice is worth listening to.

C. They eat things that are bad for them.

D. They don't clean their teeth often enough.

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