题目内容（请给出正确答案）

[单选题]

在1、27、23、29、11、9、33、14、25、99中，质数有（）个

A.2

B.3

C.4

答案

B、3

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更多“在1、27、23、29、11、9、33、14、25、99中，…”相关的问题

第1题

运行中的FS型避雷器在额定电压为3KV时的工频放电电压范围为()KV。

A.8～12

B.23～33

C.15～21

D.9～11

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第2题

完成并配平下列化学反应方程式： (1)工业生产中合成氨反应; (2)高温下氮气与金属钙反应; (3)

完成并配平下列化学反应方程式：（1)工业生产中合成氨反应; （2)高温下氮气与金属钙反应; （3)

完成并配平下列化学反应方程式：

(1)工业生产中合成氨反应;

(2)高温下氮气与金属钙反应;

(3)加热亚硝酸铵溶液;

(4)加热固体重铬酸铵;

(5)金属钠与液氨反应;

(6)向氨水中通入氯气;

(7)氨与亚硝酸溶液反应;

(8)二氯化汞与氨水反应生成白色沉淀;

(9)碳酰氯与液氨作用;

(10)磷酸铵和硝酸铵分别受热分解;

(11)联氨与溴化银反应;

(12)硅作催化剂时，联氨受热分解;

(13)羟氨与亚硝酸反应;

(14)叠氮化氢受热分解;

(15)将一氧化氮和二氧化氮的混合气体通入冰水中;

(16)室温下溶液中的亚硝酸歧化分解;

(17)硫粉与浓硝酸反应;

(18)金属锌与不同浓度的稀硝酸反应;

(19)硝酸在强脱水剂作用下发生分解;

(20)金属销与王水作用;

(21)硝酸铵受热分解;

(22)三氟化氮与水汽的混合物遇到火花;

(23)三氯化氮受热猛烈爆炸;

(24)在加热的条件下，单质硫、金属铝、金属锌分别与磷反应;

(25)磷化氢在空气中燃烧;

(26)联膦在空气中自燃;

(27)次磷酸盐与二价镍离子反应，完成化学镀;

(28)次磷酸和亚磷酸分别在酸性介质中歧化分解;

(29)锑化镁与稀盐酸作用;

(30)金属铋与硝酸反应：

(31)砷化钠的水解;

(32)在盐酸介质中，用金属锌还原三氧化二砷;

(33)用次氯酸钠溶液洗掉玻璃管壁上的砷镜;

(34)三氯化砷.三氯化锑和三氯化铋的水解;

(35)五硫化二砷与过量氢氧化钠溶液反应;

(36)硫代亚砷酸钠与稀盐酸作用;

(37)三硫化二砷与过硫化铵溶液充分反应。

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第3题

10KVFS型避雷器大修后工频放电电压范围应为()KV。

A.9～11

B.23～33

C.26～31

D.16～19

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第4题

Eggs are my favorite food. I like them （21) , hard-boiled, scrambled, or poached. 1 eat eg

Eggs are my favorite food. I like them (21) , hard-boiled, scrambled, or poached. 1 eat eggs for (22) , lunch, and dinner. I eat eggs here, there, and everywhere!

Eggs taste great. You can eat them by (23) or as part of any meal. Eggs are (24) used as an ingredient in many prepared foods. Can you think of any foods that contain (25) ？

Eggs are really a perfect food. They are (26) in most of the nutrients we need to maintain good (27) . When a baby chicken develops (28) an egg, the egg (29) and yolk are the only foods they need.

Many people believe that eggs are (30) . They point out that eggs contain a very high amount of

cholesterol(胆固醇). Too (31) of one kind of cholesterol in our blood can cause he-art disease.

There is no evidence that eggs (32) the harmful cholesterol in our blood. When we eat foods that are

(33) in cholesterol, our bodies make (34) of it to balance, or adjust.

If you want to enjoy a tasty and healthy food, eat plenty of (35) .

21.

A. fried

B. cooked

C. eaten

D. decorated

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第5题

A new came as a surprise that an elderly woman died yesterday after【21】knocked down by a m

otorist who had made no【22】to brake (刹车) . A police officer asked the driver, a man of 69, to read the number-plate of a car parked【23】the opposite side of the road. The man said this was【24】, because it was foggy. In fact, it was a sunny day. After several attempts, even from a distance of two meters, the man【25】failed to read the number-plate【26】He said he had never needed【27】, though he had been【28】in a similar accident【29】.

The question of fitness to【30】comes【31】every time some medical condition relates to an accident like this. Last week two motorists died【32】blackouts (瞬间昏厥) at the wheel, With these【33】in mind, it is not surprising that accident prevention organizations are trying to【34】the government to introduce stricter controls over【35】so that both drivers and people on the road will enjoy safety.

(41)

A．being

B．be

C．had

D．has

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第6题

Many people believe that Americans love their cars almost more than anything else. They ar

e (21) about cars. Not only is the car the (22) means of transportation in the States, it has (23) become a "plaything". (24) the time youngsters become fourteen years old or even (25) , they're likely to start (26) of having their own cars.

In the USA, the (27) family, if the father is not (28) work, can afford to buy a new car every five years. However, many young people (29) after school in order to save money to buy a car. Learning to drive and getting a driver license may be one of the most exciting (30) of a young person's life. Driver (31) is one of the most popular courses. At the end of the course the student will (32) a driving test for a license. (33) many, that piece of paper means that they have grown up.

In the United States, many men and women (34) to have cars. People use cars to go to work. (35) drive cars to go shopping, to take the children to school or for other activities.

21.

A. crazy

B. careful

C. sure

D. worried

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第7题

住宅建筑建筑高度大于（）M，为高层建筑。

A.23

B.24

C.27

D.29

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第8题

The Voice of America began during the World War II when Germany was broadcasting a radio p

rogram to get international (21) . American officials believed they should (22) the German broadcast with words that they thought were the facts of world (23) . The first VOA news report began with these words in (24) : "The (25) may be good or bad, but we shall tell you the truth." Within a week, other VOA (26) were broadcasting in Italian, French and English.

After the World war II (27) in 1945, some Americans felt VOA's (28) had to be changed, (29) the Soviet Union (苏联)became the enemy of America. They wanted to reach Soviet listeners. Then VOA began broadcasting in Russian.

In the early years VOA began (30) something new to its broadcast that was (31) "Music USA" , Another new idea came (32) in 1959. VOA knew that many listeners did not know (33) English to completely understand its normal English broadcast. So VOA (34) a simpler kind of English, which uses about 1,500 words and is spoken (35) ,of course, it is Special English.

21.

A. business

B. culture

C. support

D. information.

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第9题

From Monday until Friday most people are busy【21】, but in the evenings and on weekends the

y are free and enjoy themselves. Some watch TV or go to the movies:【22】take part in sports. It depends on individual【23】. There are many different ways to spend our【24】time.

Almost everyone has some kind of hobby, It may be【25】from collecting stamps to making model air planes. Some hobbies are very【26】; others don't【27】at all. Some collections are worth a lot of money; others are valuable only【28】their owners.

I know a man who has a【29】collection worth several thousand dollars, A short time ago he bought a rare fifty-cent piece【30】＄ 250. He was very happy about his collection and thought the price was【31】. On the contrary, my youngest brother【32】mulch boxes. He has almost 600 of them. But I【33】if they are worth any money. However, for my brother they are【34】valuable. Nothing makes him【35】than to find a new match box for his collection.

(46)

A．work or study

B．working or studying

C．in working or studying

D．in work or study

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第10题

地形图上有27、28、29、30、31、32、33、34、35m等相邻等高线，则计曲线的高程为（）m

A.29

B.28

C.30

D.35

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第11题

In order to learn a foreing language well, it is necessary to overcome the fear of making

【21】If the primary goal of language use is communication, the mistakes are 【22】consideration that may be dealt 【23】gradually as awareness of those mistakes increases. On 【24】, students should not 【25】their mistakes. The learner may observe how native speakers express themselves, and how 【26】expressions differ from the way the learner might say them. For example, a Spanish speaker who 【27】"I do it. "to express willingness to do something in the immediate future, could, by inter- acting(相互作用) 【28】native speakers of English, observe that native speakers actually say "I'11 do it". The resulting discrepancy(不同)can serve as a basis for the student to modify (个性)his way of using the present tense in English. But a student who is unwilling to interact 【29】the first place would lose this opportunity to learn by 【30】and error.

(36)

A．mistakes

B．flaws

C．errors

D．wrongs

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