下列实验现象记录正确的是( ) A.将硝酸铵溶于水,溶液温度降低 B.硫在氧气中

题型:选择题

问题:

下列实验现象记录正确的是(  )

A.将硝酸铵溶于水,溶液温度降低

B.硫在氧气中燃烧,火焰呈淡蓝色,放出大量的热

C.将生石灰放入水中,无明显现象

D.氢氧化钠溶液遇无色酚酞试液变红

考点:溶解过程中的放热和吸热S,Fe,C,P等物质在氧气中的燃烧酸碱指示剂
题型:选择题

阅读理解。

     OUR KIDS ARE AMAZING-especially compared with everybody else's (who seem to cry all the time).

How do you show your love for your kids this holiday season? With toys that are smooth and colorful,

interactive and exciting. And with ones that have educational value-because you are the boss. 

     1. FLAX ART HOSPITAL PUZZLE AND PLAY SET

     Here is a toy that doesn't need power-and the kids have to put it together themselves. This 50-piece

puzzle set is made of soft-edged hardwood and makes a complete hospital, with an X-ray room. It also

includes eight patients, a car and a driver. $ 135; flaxart. com.

     2. TINY LOVE ACTIVITY BALL

     Sure, it's cool, but this colorful baby toy also develops problem solving and motor skills. It has a head and

legs, a magnetic (磁性的) hand and a tail. Suitable for little ones from 6 to 36 months. $ 19.95; tinylove.com.

     3. ROBOSAPIEN

     This small, remote-control robot is really powerful. It performs 67 preprogrammed functions (功能),

including throwing, kicking, picking up and dancing. You can even program your own function-which, sadly,

does not include doing windows. $ 99; robosapienonline. com.

      4. MINI PEDAL CAR

     Want a Mini Cooper but can't fit the family inside? Get one for the kids. They can jump into this Mini car,

which comes in hot orange with a single adjustable (可调的) seat, and ride away. But it could spoil them for

that used car they'll be driving when they turn 16. For ages 3 to 5. $ 189; mininss. com (click on "gear up,"

then "Mini motoring gear").

1. Which toy is said to have the special design for children's safety?

A. ROBOSAPIEN

B. MINI PEDAL CAR

C. FLAX ART HOSPITAL PUZZLE AND PLAY SET

D. TINY LOVE ACTIVITY BALL

2. Which toys are fit for three-year-old kids?

A. 1 am 3.

B. 2 and 4.

C. 1 and 2.

D. 3 and 4.

3. Educational value is mentioned in all the toys EXCEPT ______.

A. FLAX ART HOSPITAL PUZZLE AND PLAY SET

B. TINY LOVE ACTIVITY BALL

C. ROBOSAPIEN

D. MINI PEDAL CAR 

4. This passage is written for _______.

A. parents

B. children

C. the writer

D. the boss

题型:选择题

东北地区山川秀美,物产丰富,又具有悠久的历史,我国政府历来重视保卫开发和建设这块宝地。阅读以下材料,结合所学知识回答问题。(10分)

材料一

材料二 东北曾被誉为“共和国经济的长子”。东北是计划经济体制最早建立、影响最深的地区,是我国重工业、基础工业和大中型国有企业最集中的地区。改革开放以来,东北经济在全国经济中所占比重逐步下降。1978年辽宁、黑龙江两省的人均GDP仅次于京、津、沪三个直辖市,到2002年辽、黑两省分别降到第9、第18位。

(1)乙市容易发生洪涝灾害的自然原因是什么?(3分)

(2)结合材料二,指出东北经济地位下降的主要原因及振兴东北老工业基地的对策。(7分)

题型:选择题

方便手指不灵活者穿衣的辅助具是()

A.穿衣棍

B.魔术扣

C.系扣沟

D.指甲刷

E.穿袜用具

题型:选择题

(31)~(35)使用如下关系:
客户(客户号,名称,联系人,邮政编码,电话号码)
产品(产品号,名称,规格说明,单价)
订购单(订单号,客户号,订购日期)
订购单名细(订单号,序号,产品号,数量)

查询订购单的数量和所有订购单平均金额的正确命令是( )。

A.SELECT COUNT(DISTINCT订单号),AVG(数量*单价);
FROM产品JOIN订购单名细ON产品.产品号=订购单名细.产品号

B.SELECT COUNT(订单号),AVG(数量*单价);
FROM产品JOIN订购单名细ON产品.产品号=订购单名细.产品号

C.SELECT COUNT(DISTINCT订单号),AVG(数量*单价);
FROM产品,订购单名细ON产品.产品号=订购单名细.产品号

D.SELECT COUNT(订单号),AVG(数量*单价);
FROM产品,订购单名细ON产品.产品号=订购单名细.产品号

题型:选择题

下列哪一项检查对诊断没有意义

A.CT

B.IVP

C.膀胱镜检查

D.肾核素扫描

E.核磁共振成像

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