如图所示的电路中,当开关闭合后,在金属夹A、B之间分别接入硬币、铅笔芯、橡皮和塑

题型:选择题

问题:

如图所示的电路中,当开关闭合后,在金属夹A、B之间分别接入硬币、铅笔芯、橡皮和塑料尺,小灯泡都能发光的是(  )

A.接入硬币和塑料尺

B.接入铅笔芯和橡皮

C.接入橡皮和塑料尺

D.接入硬币和铅笔芯

考点:导体,绝缘体
题型:选择题

有权对拒绝隔离治疗的霍乱患者采取强制措施的机构是()

A.医疗机构

B.防疫机构

C.公安机关

D.卫生行政部门

E.政府综合执法机构

题型:选择题

某班九名同学在篮球场进行定点投篮测试,每人投篮九次,投中的次数统计如下:4,3,2,4,4,1,5,0,3,则这级数据的中位数、众数分别为[ ]

A.3,4

B.4,3

C.3,3

D.4,4

题型:选择题

Have you ever seen people dance? Some dances are fast and others are slow. People’s feet always move when they dance. They keep on moving until the music stops.

People have enjoyed dancing for a very long time. This story is of a different kind of dance. It is a dance without people or music. Yet this dance is one of the oldest in the world. It is the dance of bees.

If you have ever watched bees, you know that they are very clever. They also work hard looking for food and bringing it back to their home.

The home of the bees is called a bee hive. Here hundreds even thousand of bees live. They work day and night building small walls. There they make their honey. This is the same honey that we eat.

Where does the honey come from? Bees live on food from flowers. Have you seen bees flying around a flower garden? When a bee rests on a flower, it tries to go to the centre of it. There it takes in as much food as its body can hold. Then it flies to take the food back to the hive.

At the hive, bees change flower food into honey. Then they fly away for more food.

How do the bees know where to find the best food in the sweetest flowers? One bee acts as a guide. When it discovers good flowers, it flies back to the hive and tells the others. It does this by dancing for them.

The bee dances on one side. This tells the other bees which way to go to find the flowers. But that is not all. The bee dances for some time. And the length of its dance tells the other bees how far they must fly to reach the flowers.

When the bees see the dance, they know where the flowers are. They fly away and return with more food for the hive.

Sometimes we hear the music of the bees as they fly around. But few people have ever seen them dance. Yet without that dance we might never have sweet honey to eat.

1. The writer believes that_________.

A. people dance better than bees

B. people learned dance from bees

C. bees dance more often than people

D. bees don’t like music

2. From this passage we know that the dance of bees means_______.

A. They are good at dancing

B. they want to show their beauty

C. they communicate with each other

D. they have nothing to do

3. Which of the following is true?

A. People get honey from flowers directly.

B. People draw honey from bees’ bodies.

C. People produce honey in a secret place.

D. People get honey from bees indirectly.

4. What character do bees have?

A. dance-loving           B. hard-working        C. music-loving        D. active

题型:选择题

为避免子宫破裂,产前缩宫素的使用下列哪项不正确

A.使用缩宫素前,仔细行 * * 检查

B.瘢痕子宫分娩前慎用缩宫素

C.从1%浓度10滴开始

D.缩宫素引产时应有专人守护

E.剂量个体化

题型:选择题

他们在天上,愿为一颗星。他们在地上,愿为一盏灯。不怕显得多么渺小,只要尽其可能。唯因不被承认才格外勇敢真诚,即使像眼泪一样跌碎,敏感的大地处处仍有持久而悠远的回声。——舒婷《献给我的同代人》这段优美的话语()

①发挥了首创精神,肯定了思想道德建设是社会主义文化建设的中心环节

②陶冶了人的情操,丰富了人的精神世界,增强了人的精神力量

③如理性的明灯,指明了社会主义文化建设的前进方向

④似春雨般润物,激励人们塑造美好人生

 

A.①②

B.①③

C.②④

D.③④

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