Before winter arrives, many kinds of birds kn...

Before winter arrives, many kinds of birds know that it is time to fly south. The migration (迁徙) has always made us think hard. Why do only some birds migrate? How do birds know when to go south? How do they find their way?

Some birds fly south because their food supply runs short in winter. The woodpecker (啄木鸟), for example, doesn't need to fly south because it can find food in the bark (树皮) of trees. Some birds eat grains, insects and other food that disappear in winter, so they must fly south where food can still be found. But why don't they stay in the south? Perhaps they know that if they stayed down south, they would run out of food there, too.

It is possible that birds know when winter is coming because they find that the days are getting shorter. Once they leave from the north, they use the sun as a compass. The sun is in different positions in the sky at different times of day. To use it as a guide, birds would have to know the time of day. On long flight, most birds use the stars to navigate (导航) their way.

The homing pigeon (信鸽) doesn't use the sun or the stars. Scientists believe that it uses the magnetic field (磁场) of the earth. One of the most amazing migrations is that of the tiny hummingbird (蜂鸟). It travels from Canada to Mexico—a long distance of over 3,600 kilometers.

1.It is believed that some birds fly south because ________.

A.they need food B.they like warm weather

C.they get lost D.it is just a habit

2.On long migration flights, most birds find their way with the help of _______.

A.the stars B.other birds

C.the moon D.the magnetic field

3.Which of the following is NOT true according to the passage?

A.The woodpecker usually doesn't need migration.

B.The hummingbird flies to Mexico for food.

C.Birds migrate before winter comes.

D.Birds that eat insects like staying in the south better.

九年级英语阅读单选中等难度题查看答案及解析

—It’s said that the forest is disappearing.

—Yes._______, many kinds of birds and animals are dying out.

A. For example          B. As a result     C. Since then

九年级英语单项填空中等难度题查看答案及解析

As we all know, the 2022 Winter Olympics1. (be) held in Beijing, China. The Winter Olympics are also called the White Olympics. At this time, many colorful stamps are published　 (出版)2. (celebrate) the great Games. The first stamps came out on January 25, 1932 in the United States for the 3rd Winter Olympics.

During the 4th White Olympics, a set of stamps came out in Germany in 1936. The five Olympics rings 3. (draw) on the front of the sportswear. It was the first time that the rings appeared on stamps celebrating the Winter Olympics.

In the 1950s, the stamps 4. (become) more colorful. When the Winter Olympics arrived, the host countries as well as the non-host countries published stamps for the Games. China also published four stamps in February 1980 when Chinese sportsmen began5. (take) part in the Winter Olympics. Japan is the only Asian country that6. (hold) the Winter Olympics so far. More than 14, 500 million stamps were sold to raise money for this sports meeting. We are looking forward to7. (see) more different kinds of sports on these small stamps.

九年级英语语法填空困难题查看答案及解析

Bird lovers know that a good place to go bird-watching is Guandu Nature Park. As many as 220 kinds of birds come to this park every year. Since the park offers birds lots of food to eat and places to build their nests, it has become a paradise（天堂）for birds.

Guandu Nature Park is also a great outdoor classroom. The park’s Nature Center provides guided tours to the public. During the tour, visitors can learn about the environment. So, if you want to have a fun and educational weekend, come to Guandu Nature Park. Get away from city life and head into nature.

1.What do bird lovers think about Guandu Nature Park?（不超过15个词）

_____________________________________________________________

2.Why has Guandu Nature Park become a paradise for birds?（不超过20个词）

____________________________________________________________

3.What is provided to the public by the park?（不超过10个词）

______________________________________________________________

九年级英语回答问题困难题查看答案及解析

You Are What You Eat

Genetic (基因的) engineering is the scientific change of the genetic material in a living thing. It allows scientists to identify specific genes, to remove them from a living thing’s chromosomes(染色体), improve them, analyze them, and possibly clone them, and to then reinsert the changed gene into the original living thing, or a completely different living things. Unlike traditional breeding (繁殖), where a desired quality would be bred within the same kind of living things, genetic engineering can insert desired ones into living things of different kinds. Wow ... did you catch that?

Genetic engineering creates many positive contributions to agriculture. For example, by genetically engineered (GE) foods, anti-cancer agents, minerals and vitamins can be increased. Improved taste, shelf life, and better transport are all possible. Also, GE plants can increase pest and bacterial resistance（抵抗力）, therefore, making the food safe for the consumers.

But some argue that the possible negative effects outweigh the positives, and critics are starting to voice their worries. Unlike Europe, in the United States labeling（贴标签）is not required on genetically engineered foods or on foods that contain genetically engineered products. Most Americans do not realize that they are, in fact, eating GE foods.

The public is also concerned about the unknown health risks. With limited understanding of genes, scientists cannot predict possible effects. Because most genes introduced into GE plants come from sources not introduced into the human body, it is impossible to know if they will cause reactions. Moreover, due to the lack of labeling, if allergies（过敏）develop, it will be extremely difficult to find the origin of them.

There is also a major moral question in many minds. For many, the conflict is not if it is safe or not, but it disturbs them because it is unnatural and unnecessary. We are currently producing one and a half times the amount of food needed to feed the world, yet one in seven people are starving. So GE food is unnecessary, and fails to address the root of hunger. Many believe that the only people who will benefit are the corporations that produce it.　

Scientists cannot foresee the possible effects of GE foods, yet we eat them every day without even knowing it. We already have enough food, so why create more that could be potentially harmful to us, to the Earth and to all wildlife? I think that the benefits are amazing, but until we know for sure how these foods will affect us, they are not worth the risk.

1.According to the passage, traditional breeding is different from genetic engineering because________.

A.traditional breeding changes the genes in the same kind of living things

B.traditional breeding takes place within the same kind of living things

C.traditional breeding is more scientific

D.traditional breeding changes the genes in different kinds of living things

2.According to Paragraph 5, GE food is unnecessary because ________.

A.customers will benefit from GE food

B.we’re now producing more food than before

C.it won’t help solve the problem of hunger in the world

D.there are obvious dangers in producing GE food

3.What is the writer’s writing purpose?

A.To introduce genetic engineering’s positive contributions to agriculture.

B.To welcome genetic engineering and GE food.

C.To discuss the differences between GE food and other food.

D.To tell people to keep GE food off before their influence on us is clear.

九年级英语阅读单选困难题查看答案及解析

In China, there are 24 solar terms（节气）in a year. And there are six of them in winter. They are beginning of winter, light snow, heavy snow, winter solstice（冬至）, lesser cold(小寒）and greater cold.

Beginning of winter usually falls on November 7th or 8th. After beginning of winter, most parts of the country can start to expect cold weather. On this day, after a year of hard work, people are happy to have a rest and spend time with family. The northern China celebrates beginning of winter as the “Small Spring Festival”. People usually have dumplings and mutton soup on that day.

Light snow usually falls on November 22nd or 23rd and heavy snow usually falls on December 7th or 8th. When winter solstice comes, it brings the shortest days of the year and the longest nights. Many places around the country can expect the coldest weather yet. People often start counting “nine cold periods” starting from winter solstice. Every cold period has nine days. People believe that after 81 cold days, spring will come.

Greater cold comes after lesser cold. The field is covered with snow. And all Chinese are ready to welcome the Spring Festival after it. Of course, a new round of solar terms will start.

1.From the passage, we know that there are six solar terms in winter.

2.People in northern China usually have dumplings and mutton soup on beginning of winter.

3.Heavy snow comes before light snow.

4.All Chinese are ready to celebrate the Spring Festival after greater cold.

5.The passage tells us how people celebrate the Spring Festival.

九年级英语阅读判断中等难度题查看答案及解析

Weeks before Tomb-Sweeping Day on April 4 this year, hundreds of qingtuan were sold each day. The snack was still a must-have for many people.

In the southern part of China, eating qingtuan at the beginning of spring is a kind of tradition. Chinese people started to eat it more than 2,000 years ago. It is made of sticky rice（糯米）and red bean paste（红豆沙）, and is famous for its softness, freshness and sweetness. The secret behind its mouth-watering taste is one of its materials-mugwort leaves（艾蒿叶）. The plant is mainly found in the Yangtze River Delta（长江三角洲）where it has perfect conditions to grow.

People in this area usually put qingtuan on the tombs（墓）of their dead family members to cherish the past memory. Making qingtuan is also a chance for family members to get together at home. It really takes time and effort to make the snack.

Now, qingtuan has already spread its special taste to the northern part of China. Li Yuan, a 30-year-old engineer who grew up in Zhejiang Province, brought qingtuan back to Beijing where he works. “It tastes different in and out of my hometown, he said.” There’s no place like home.

Qingtuan has many different tastes inside it, such as apples and bean milk, to meet customers’ tastes. The difference of the taste shows that it’s getting more and more popular across the whole country.

Even though there is warm weather and green leaves in spring, the season wouldn’t be complete without a taste of qingtuan.

1.Tomb-Sweeping Day is in_________.

A.spring B.summer C.autumn D.winter

2.Your mouth waters when seeing qingtuan because of the _________.

A.sticky rice B.green color C.red bean paste D.mugwort leaves

3.The underlined word “cherish” in the third paragraph probably means_________.

A.遗忘 B.怀念 C.祈求 D.清除

4.We can know from the passage that Li Yuan_________.

A.loves no place B.sells qingtuan

C.works in Beijing D.works as a cook

5.Which is the best title for this passage?

A.Growing up in Beijing B.Planting Rice in Zhejiang

C.Meeting Customers’ Tastes D.Marking the Start of Spring

九年级英语阅读单选中等难度题查看答案及解析

根据短文的内容，从方框所给的选项中选出能够填入短文空白处的最佳选项。

Qi Haoran, a Junior 1 student, was quite busy over the past winter vacation and not just with homework. Qi, together with 10 other classmates made a volunteer group to call on people to join the Clean Your Plate Campaign.

1. “Excuse me, do you know that 950 million people around the world still haven’t got enough to eat? Please don’t waste food.” They would say this kind of thing hundreds of times every day.

The Clean Your Plate Campaign began on the Internet in January. It calls on people to reduce food waste.

2..　 CCTV reported in January that the food Chinese people waste every year is enough to feed 200 million people for a year.

Chinese people are well known for being hospitable and generous. Many even feel that they lose face if their guests have eaten all the food.

3. In a restaurant in Xinjiang, the owner give the guests who have eaten all that they ordered a sticker. People can enjoy a free meal when they have 10 stickers.　 4.　　

5.. It’s important that everyone does their bit, just like Qi. Did you finish your meals today？

A.China in these years had serious problems with wasted food.

B.More than 750 restaurants in Beijing have begun to offer smaller dishes and encourage their guests to take leftovers home.

C.The 11 students went to many restaurants and told people the importance of saving food.

D.To reduce food waste is a big task, and it needs time.

E.Luckily, the campaign has got the support of many.

九年级英语补全短文5选5中等难度题查看答案及解析

1.Mary likes to be quiet. She wants to keep a nice pet at home. She hopes it can decorate (装饰) her room. But she doesn't want to spend too much money on it.

2.Kim, a college student, knows little about animals. He only wants to play with the pet. But his room isn't big enough.

3.Eric likes to play with the pet. If it can follow his instructions, he must be very happy. He hopes they can be good friends.

4.Mr. Brown is a businessman. He is busy with his work every day. He wants to choose a clever pet for his daughter who is only 4 years old. He doesn't care how much it costs.

5.Mrs. Miller is a housewife. She feels lonely at home. She wants a pet that can talk. She hopes it can make her life lively. But she is afraid of getting hurt.

A.Birds are colorful and nice to look at. Some birds can even say hello to the masters. They are safe and stay in their cages. However, training a bird takes time.

B.If you love to be silent, a fish is one of the best pets for you. It can add beauty to your home as well. But you must make sure fish eat the right kind of food. Cleaning their home needs much time.

C.Hamsters (仓鼠) don't need a large place to live and can be easily taken care of. You can play with them. If you touch them with your fingers, they may hurt you.

D.Keeping a turtle (乌龟) as a pet is fun. Turtles are the quietest pets. If you are less than five years old, you'd better not keep turtles because they can spread salmonella (沙氏门菌).

E.Many families keep dogs because they are smart. They can even understand what you say. They like to play with their masters. But you need to spend time walking them.

F.Cats may be many children's best choice. They are beautiful and cute. However, keeping cats may cost much money because you need to buy some toys for them.

九年级英语信息匹配中等难度题查看答案及解析

We all know that ________ birds fly to Dongting Lake in winter.

A.million B.millions C.millions of

九年级英语单选题中等难度题查看答案及解析