陆地气候相对干燥,陆地生活的动物一般都具有防止水分散失的结构。如昆虫具有 A.外

题型:选择题

问题:

陆地气候相对干燥,陆地生活的动物一般都具有防止水分散失的结构。如昆虫具有

A.外骨骼

B.肺

C.心脏

D.触角

考点:观察实验:饲养和观察蚯蚓动物的生活环境和生活习性动物的形态结构和功能
题型:选择题

阅读理解。

                                                    Edison-style light bulb and CFLs

1. About 130 years ago, Thomas Edison of the USA invented the light bulb. Edison's bulb has turned night

    into day ever since. But today, many want to turn the light off.

2. The European Union recently decided that by 2009, people should stop using the Edison-style light bulb.

     Instead, they should use compact fluorescent lamps (CFLs节能灯).

3. "CFLs save energy and last longer. They can save money in the long run," said a British official. CFLs

     use 67 percent less electricity than the older bulbs. They last up to times longer. Scientists say that if

     everyone used CFLs, electrify use would be cut 18 percent. There would also be much smaller amounts

     of greenhouse gases given off.

4. But it's difficult to make people change their lighting habits. First the CFLs are more expensive. They cost

    eight times the price of the older bulbs. Many people don't like the CFL bulbs. They find it too bright. You

    cannot change the light of a CFL, either.

5. CFLs have been around for several years. However, the older lights still make up about two-thirds of total

    light bulb sales.

A. When to stop to use CFLs

B. Edison made the world bright

C. The older style lights are still used widely

D. The advantages of using CFLs

E. The disadvantages of using CFLs.

阅读以上5段语言材料,请找出与它们相对应的标题,并将其标号填入下列横线上。

1             2             3             4             5             

题型:选择题

先天性风疹综合征引起的新生儿畸形有哪些()

A.先天性心脏病(动脉导管末闭、肺动脉狭窄

B.糖尿病

C.眼部畸形(白内障、青光眼或视网膜病)

D.神经系统异常(小头畸形、智力低下)

E.骨发育障碍

题型:选择题

房室传导阻滞(AVblock)

题型:选择题

建设工程项目总承包的任务从时间范围上,一般可包括从()到交付使用的工程建设全过程。

A.工程设计

B.工程立项

C.工程勘察

D.工程招标

题型:选择题

仪器对中误差对水平角观测的影响与()因素有关。

A.偏心距

B.边长

C.水平角大小

D.竖直角

E.天顶距

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