Did you ever wonder how some of your favorite...

Did you ever wonder how some of your favorite foods, products or toys came about? Believe it or not, they may have been an accident, or a failure of some other intention. Below, we found three mistakes we’re thankful for turned out to be what they are.

1. Most historians hold that the Chinese invented fireworks in the 9^th century when they discovered how to make gunpowder. Story has it that a Chinese cook accidentally mixed together what were then considered common kitchen items and noticed they burnt. When put tightly in a bamboo tube and lit, it blew up.

2. In May of 1886, a law led John Pemberton, a pharmacist(药剂师), to rewrite the formula(配方) for “Pemberton’s French Wine Coca”, his popular headache treatment. Containing sugar instead of wine as a sweetener, the outcome became something for Coke, which was later mixed with carbonated(碳酸) water. His bookkeeper suggested the name Coca-Cola because he thought the two C’s would look good together, which is how what we call Coca-Cola, a world-wide drink came into being.

3. During World WarⅡ, scientists at the University of Birmingham invented the magnetron(磁控管)—an important heat-producing part of the microwave oven. While working for Raytheon Corporation after the war, the American engineer Percy Spencer was testing the magnetron when a chocolate bar in his pocket melted. He went on to test other foods including popcorn kernels(仁), and found it to be a much more efficient way to cook. In 1947 Raytheon came out with the first restaurant microwave oven, which was six feet tall and weighed 750 lbs.

1.The right time order of the three inventions should be ________.

A. fireworks, the microwave and Coca-Cola

B. fireworks, Coca-Cola and the microwave

C. Coca-Cola, fireworks and the microwave

D. the microwave, Coca-Cola and fireworks

2.Percy Spencer found the microwave efficient in cooking when he was ________.

A.  looking for a way to melt his chocolate

B.  trying to know how a magnetron could cook

C.  working to know how the magnetron works

D.  asked to invent a restaurant microwave oven

3.The underlined phrase “ blew up” might mean _______ in Chinese.

A. 爆炸                B. 膨胀         C. 升华         D. 蒸发

4.What can we learn from the above invention stories?

A.  Experiments make great inventors of our time.

B.  Nothing is impossible if one tries each day.

C.  Inventors come out of hard work at any time.

D.  A small incident may lead to a great invention.

九年级英语阅读理解困难题查看答案及解析

Did you ever wonder how some of your favorite foods, products or toys came about? Believe it or not, they may have been an accident, or a failure of some other intention. Below, we found three mistakes we’re thankful for turned out to be what they are.

1. Most historians hold that the Chinese invented fireworks in the 9th century when they discovered how to make gunpowder. Story has it that a Chinese cook accidentally mixed together what were then considered common kitchen items and noticed they burnt. When put tightly(紧紧地）in a bamboo tube(管子and lit, it blew up.

2. In May of 1886, a law led John Pemberton, a pharmacist(药剂师), to rewrite the formula(配方) for “Pemberton’s French Wine Coca”, his popular headache treatment. Containing sugar instead of wine as a sweetener, the outcome became something for Coke, which was later mixed with carbonated(碳酸) water. His bookkeeper suggested the name Coca-Cola because he thought the two C’s would look good together, which is how what we call Coca-Cola, a world-wide drink came into being.

3. During World WarⅡ, scientists at the University of Birmingham invented the magnetron(磁控管)—an important heat-producing part of the microwave oven. While working for Raytheon Corporation after the war, the American engineer Percy Spencer was testing the magnetron when a chocolate bar in his pocket melted. He went on to test other foods including popcorn kernels(仁), and found it to be a much more efficient way to cook. In 1947 Raytheon came out with the first restaurant microwave oven, which was six feet tall and weighed 750 lbs.

1.The underlined phrase “ blew up” might mean _______ in Chinese.

A. 爆炸　　 B. 膨胀　　 C. 升华　　 D. 蒸发

2.Percy Spencer found the microwave efficient in cooking when he was ________.

A. looking for a way to melt his chocolate

B. trying to know tow a magnetron could cook

C. working to know how the magnetron works

D. asked to invent a restaurant microwave oven

3. The right time order of the three inventions should be ________.

A. fireworks, the microwave and Coca-cola

B. fireworks, Coca-cola and the microwave

C. Coca-cola, fireworks and the microwave

D. the microwave, Coca-cola and the fireworks

4.What can we learn from the above invention stories?

A．Experiments makes great inventors of our time.

B. Nothing is impossible if one tries each day.

C. Inventors come out of hard work at any time.

D. A small incident may lead to a great invention.

5.What’s the best title for the passage?

A. What great inventions they are!

B. Inventions from Three Countries.

C. Stories of Accidental Inventions.

D. The Human Inventions of time.

九年级英语阅读理解中等难度题查看答案及解析

Did you ever wonder how some of your favorite foods, products or toys came about? Believe it or not, they may have been an accident, or a failure of some other intention. Below, we found three mistakes we’re thankful for turned out to be what they are.

1. Most historians hold that the Chinese invented fireworks in the 9th century when they discovered how to make gunpowder. Story has it that a Chinese cook accidentally mixed together what were then considered common kitchen items and noticed they burnt. When put tightly(紧紧地）in a bamboo tube(管子and lit, it blew up.

2. In May of 1886, a law led John Pemberton, a pharmacist(药剂师), to rewrite the formula(配方) for “Pemberton’s French Wine Coca”, his popular headache treatment. Containing sugar instead of wine as a sweetener, the outcome became something for Coke, which was later mixed with carbonated(碳酸) water. His bookkeeper suggested the name Coca-Cola because he thought the two C’s would look good together, which is how what we call Coca-Cola, a world-wide drink came into being.

3. During World WarⅡ, scientists at the University of Birmingham invented the magnetron(磁控管)—an important heat-producing part of the microwave oven. While working for Raytheon Corporation after the war, the American engineer Percy Spencer was testing the magnetron when a chocolate bar in his pocket melted. He went on to test other foods including popcorn kernels(仁), and found it to be a much more efficient way to cook. In 1947 Raytheon came out with the first restaurant microwave oven, which was six feet tall and weighed 750 lbs.

1.The underlined phrase “ blew up” might mean _______ in Chinese.

A. 爆炸　　 B. 膨胀　　 C. 升华　　 D. 蒸发

2.Percy Spencer found the microwave efficient in cooking when he was ________.

A. looking for a way to melt his chocolate

B. trying to know tow a magnetron could cook

C. working to know how the magnetron works

D. asked to invent a restaurant microwave oven

3. The right time order of the three inventions should be ________.

A. fireworks, the microwave and Coca-cola

B. fireworks, Coca-cola and the microwave

C. Coca-cola, fireworks and the microwave

D. the microwave, Coca-cola and the fireworks

4.What can we learn from the above invention stories?

A．Experiments makes great inventors of our time.

B. Nothing is impossible if one tries each day.

C. Inventors come out of hard work at any time.

D. A small incident may lead to a great invention.

5.What’s the best title for the passage?

A. What great inventions they are!

B. Inventions from Three Countries.

C. Stories of Accidental Inventions.

D. The Human Inventions of time.

九年级英语阅读理解困难题查看答案及解析

We all enjoy the beautiful show of colours as leaves change each autumn. But did you ever wonder how and why this happens?

Leaves are nature’s food factories. Plants take water from the ground through their roots and take carbon dioxide (二氧化碳) from the air. Plants use sunlight to turn water and carbon dioxide into glucose (葡萄糖). Glucose is a kind of sugar, which plants use as food for energy and growing.

The way plants turn water and carbon dioxide into sugar is called photosynthesis that means “ putting together with light”. A chemical called chlorophyll helps photosynthesis. It gives plants their green colour. As summer ends and autumn comes, the days get shorter and shorter, and trees “know” to begin getting ready for winter.

During winter, there is not enough light or water for photosynthesis. Trees rest during this time and live on the food they store during the summer. They begin to shut down their food-making factories.

As the green chlorophyll disappears from the leaves, we begin to see yellow and orange leaves. Small amounts of these colours have been in the leaves all along. We just can’t see them in the summer, because they are covered up by the green chlorophyll.

The bright reds and purples we see in leaves are made mostly in autumn. In some trees, like maples (枫树), glucose is caught in the leaves after photosynthesis stops. Sunlight and the cool nights of autumn turn this glucose into a red colour. The brown colour of trees like oaks (橡树) is made from waste left in the leaves.

It is the mixture of all these things that makes the beautiful colours we enjoy during autumn.

1.The word “chlorophyll” in the third paragraph means _______ in Chinese.

A．叶绿素           B．氧气             C．胡萝卜素         D．蛋白质

2.The leaves of the trees in autumn turn yellow because of the short of _____.

A．water and carbon dioxide

B．glucose and energy

C．sunlight and water

D．sunlight and carbon dioxide

3.The way that _______________________ is called Photosynthesis .

A．plants change water and carbon dioxide into sugar

B．plants turn water and carbon dioxide into sugar with the help of sunlight

C．plants use glucose as food for energy and growing

D．chlorophyll is a great help

4.Which of the following is NOT true?

A．When autumn and winter come, the days get shorter and shorter.

B．During winter trees rest and live on the food they store during the summer.

C．During winter small amounts of yellow and orange colours are kept in the leaves all the time.

D．Trees begin to stop making food in summer.

5.This passage tells us __________________.

A．all the plants can grow well with the strong sunlight

B．there are all kinds of plants on the earth

C．all the colours of the leaves aren’t made from chlorophyll

D．maples and oaks have the same reason as other trees for the change of colours

九年级英语阅读理解中等难度题查看答案及解析

Chewing gum (口香糖) may be one of your favorite sweets. But did you know how it was ____?

The sweet was invented by American scientist Thomas Adams. However, he invented it completely __ .

It was 1869. Earlier that year, one of Adams' friends showed him an interesting kind of sap (树汁). His friend told him_____ people in Central America liked to chew (咀嚼) on it for fun. Hundreds of years passed, people didn't do that any longer. But Adams was interested in the sap. He wanted to use it to create some new ____ .

Adams, however, ________ to create the products he wanted. He felt bored and________ and happened to chew on the sap. _______ , the sap tasted great. Adams then added something else to the sap and started selling it. Later in 1869, he opened a factory to produce this delicious _______ .

In 1888, Adams gave a ________ to the invention: "chewing gum." The sweet can be got from selling machines at underground stations all over New York City. Over the years, new kinds have been _______ . Now, chewing gum is popular among many people. However, few people know this was all started by an American scientist from a mistake.

1.A.eaten B.polluted C.sold D.invented

2.A.in public B.by mistake C.in person D.by hand

3.A.ancient B.single C.famous D.sick

4.A.products B.records C.crops D.fruits

5.A.agreed B.preferred C.failed D.afforded

6.A.angry B.nervous C.lucky D.satisfied

7.A.Usually B.Surprisingly C.Slowly D.Clearly

8.A.dish B.meal C.drink D.treat

9.A.method B.name C.prize D.menu

10.A.divided B.stored C.developed D.repeated

九年级英语完型填空中等难度题查看答案及解析

How was your Children’s Day? What kind of gifts did you get?

Eight third graders in some poor places in Hebei Province got new schoolbags as Children’s Day gifts. They were very happy. There were pencils, pens, exercise books and many other school supplies in the schoolbags.

These schoolbags are from students in Beijing Zhongguancun Fourth Primary School. They are in Class 5, Grade 3. They raised money by themselves. They printed out their writings. Their head teacher Mrs Hou helped them to make books. They sold the books at their school to make 800 yuan.

Chen Hongsheng, 9 years old, is one of the students. “We use 800 yuan to buy eight schoolbags at the post office. The post office workers give us a list of the kids. These kids live in poor places. We can choose eight kids by ourselves and post these schoolbags to them,” she said very proudly. “These schoolbags are gifts of our class. This summer vacation, I’ll send out a schoolbag by myself. I hope the kid with my schoolbag can go to school happily like us in the new term.”

1.How many kids got new schoolbags in Hebei Province?

2.Which of the following is True according to the passage?

3.How do the students of Class 5, Grade 3 make 800 Yuan?

4. How did Chen Hongsheng feel about their help to the poor children?

5.What is the best title for the passage?

九年级英语阅读理解中等难度题查看答案及解析

I wonder ___________.

A. how much did your coat cost

B. how much is your coat cost

C. how much does your coat cost

D. how much your coat costs

九年级英语单项填空中等难度题查看答案及解析

--- How did you find your visit to Dalian, Joan?

--- ________.

A. Oh, wonderful indeed

B. I went there alone

C. First by train and then by ship

D. A guide showed me the way

九年级英语单项填空简单题查看答案及解析

When you sit down with your family to eat a meal, do you ever wonder when and where the 　　　 of using chopsticks (筷子) began?

People say that the first chopsticks were used in China 5,000 years ago. The practice became widespread in Korea, Vietnam and Japan. Today they are a symbol of　 　　　 　 culture.

Of Asian co untries, Japan highlights the importance of chopsticks　　 　　　 　 a day to celebrate them. August 4 is　　 　　　 as Chopsticks Day in Japan.

The different　　 　　　 　 traditions of Asia lead to different kinds of chopsticks. For example the Japanese use sharp chopsticks　　 　　　 　 they eat a lot of fish. Sharp chopsticks are good for picking the fish from the bones.

Chopsticks are made from different kinds of material. Bamboo chopsticks are　　 　　　 　 because the material is easy to break apart and doesn’t burn easily. People also use wood and bone for chopsticks. Some rich people had theirs　　 　　　 　 from valuable metals. Many emperors used silver chopsticks, for it was believed that they would turn　 　　　 　 if there was poison in the food.

There are also many table manners 　　　 with chopsticks. For instance, never stick your chopsticks upright in your rice bowl or tap on your bowl with your chopsticks. People believe this is impolite to the host.

1.A. advantage    B. tradition    C. instru ction    　　 D. time

2.A. European    　　 B. American    C. Asian    　　　　 D. Chinese

3.A. with    　　　　 B. through    　　 C. on    　　　　 D. over

4.A. picked    　　 B. made    　　 C. used    　　　　 D. set

5.A. homing    　　 B. producing    C. cooking    　　 D. gardening

6.A. because    　　 B. so    　　　　　 C. once    　　　　 D. unless

7.A. usual    　　 B. common    C. general    　　 D. strong

8.A. to make    　　 B. making    　　 C. made    　　　　 D. being made

9.A. black    　　 B. gray    　　 C. dark    　　　　 D. red

10.A. popular    　　 B. filled    　　 C. compared    　　 D. connected

九年级英语完型填空中等难度题查看答案及解析

— The food is delicious .How did you cook it well?

— First, I bought some good _______________.

A. ingredients　　 B. instructions

C. express　　 D. descriptions

九年级英语单选题简单题查看答案及解析