The running water makes the stones ______ ver...

The running water makes the stones _____ very smooth.

A．sound　　　　　 B．taste

C．smell　　　　 D．feel

九年级英语单项填空中等难度题查看答案及解析

】 The running water makes the stones ______ very smooth.

A. sound　　　　　 　 　　 　 B. taste

C. smell　　　　　　 　　 　 D. feel

九年级英语单项填空中等难度题查看答案及解析

The running water makes the stones ______ very smooth.

A. sound B. taste C. smell D. feel

九年级英语单项填空简单题查看答案及解析

The running water makes the stones ______ very smooth.

A.sound B.taste C.smell D.feel

九年级英语单选题简单题查看答案及解析

Have you ever rubbed your hands together when they get cold? Why do we do that? We do that for friction. Friction happens when two things that aren’t very smooth rub together to make heat energy. The faster you rub two things together, the more friction ( and heat) you can make. Let’s discover friction!

WHAT YOU’LL NEED:·Soap ·Water· Your hands!

WHAT TO DO:

1. Make sure your hands are dirty.

2. Rub your hands together until you feel the heat of your hands.

3. Now, use soap and water to get your hands very slippery(滑的).

4. Try to make friction happen while your hands are slippery.

5. Please write down what has happened.

LET’S TALK!

Friction is an energy that happens when two things rub together. When friction happens, it makes heat! When your hands are slippery, they won’t make very much friction and your hands won’t get so hot.

DID YOU KNOW?

(1)Friction happens when you stop your fast running bike.

(2)Ancient people made fires by rubbing two pieces of wood together. Friction happened though they didn’t know it.

________?_________

Friction is everywhere. Have you ever noticed situations where friction is happening? If not, ask your parents to take you out in a car. If it is not hot, touch the tires(轮胎) of the car before and after a short drive to see how much warmer they get from friction.

1.This passage is most probably ____________.

A.a science report B.a car advertisement

C.a rubbing introduction D.a chemistry program

2.____________ is not an example of friction.

A.Bike riding B.Car driving C.Hands rubbing D.Friction discovering

3.What’s the last column(栏目)?

A.THINK IT OVER! B.WHAT HAPPENED?

C.EVERYDAY ACTION: D.WORK WITH PARENTS

九年级英语阅读单选中等难度题查看答案及解析

To save water, please don’t______ the water running when you are not washing things.

A. get　　 B. make　　 C. stop　　 D. leave

九年级英语单选题中等难度题查看答案及解析

B

A wise man was walking from one town to another with a few of his followers, and they happened to pass a lake. So they stopped there to rest for a while, and the wise man said to one of his followers, “Could you please get me some water from the lake ?”

One of the followers walked to the lake. Some people were washing clothes in the water, and right at that moment, several carts started crossing the lake. As a result, the water became very muddy(浑浊的).

Then he went back, and told the wise man that the water was very muddy and not fit to drink. After they had rested for about half an hour. the wise man again asked the same follower to go back to the lake and get him some water to drink. And the follower went to the lake. This time he found that all the mud had settled (沉淀)to the bottom. the water was very clear and looked fit to drink. So he filled his water bottle and took it to the wise man.

The wise man took the water bottle and drank, then looked up at the follower. “ See what you did to make the water clean?” he said. “you let it be for a while and the mud settled down on its own, so that you could get some clear drinking water. Your mind can also be like that lake when it is disturbed (使恼怒)by something. If you just let it be and give it a little time, it will most likely settle down on its own without you having to put in any effort at all to calm it.”

1.Water in the lake became very muddy after__________.

A.the wise man said he felt thirsty B.the follower left the lake

C.some people washed clothes in it D.several carts crossed the lake

2.The water became clear again because__________.

A.the mud was carried away by the carts

B.people stopped washing their clothes in it

C.the mud had settled to the bottom

D.the follower did something to make it clear

3.The underlined word"it"in Paragraph 3 refers to__________

A.a cart B.some mud C.a bottle D.a stone

4.According to the wise man, how can you keep your mind clear?

A.Give it some time to settle down on its own.

B.Go to a lake and get ideas from it.

C.Put in a lot of effort to calm it.

D.Ask others to help you out when you are disturbed.

九年级英语阅读单选中等难度题查看答案及解析

Why Live Near the River?

Imagine pioneers traveling west in the 1800s. In those days, it was hard to find running water and shops where to buy things. As time went by, most pioneers had to make their homes near a river so that they could get water easily.

How did rivers help people live in the past?

Back in the pioneer days, people grew their own food, caught their own fish, and collected their own water.1. People also used rivers as roads, traveling on boats. Traders shipped goods (货物) to people from other areas.

2.

When building many factories right next to rivers for the water’s power to make machines work, some people choose to live near a river for working. They use the river to ship large goods, and some of them work at these factories where power factories provide electricity to homes and businesses.3.

Who wouldn’t want to live near a river?

Some people are nervous about living near rivers because rivers can cause floods (洪水). Every once in a while, floodwaters rise higher than a house, ruining (泡坏) many things in the house.

4.Such waste causes water to smell bad and pollutes the crops (庄稼) we eat. Water and crops in polluted areas can make people very sick.

How do people decide where to live?

5.Rivers can provide jobs and fun activities in a beautiful place. However, those living by rivers should be willing to accept possible problems as well.

A.Why do people live near rivers now?

B.Why did people want to live near a river?

C.Some factories put their waste into rivers.

D.Staying close to a river was easy to get water for living.

E.Some factories stop waste water from running into rivers.

F.People who carry goods onto ships live near the river, too.

G.People should think over the possible risks before deciding where to live.

九年级英语补全短文7选5中等难度题查看答案及解析

When your parents are out, what will you do for 1. (you)? Let me teach you how to make noodles.

First, you should mix the flour and water 2. (careful). Then you put the dough (面团) aside for a while. When the dough becomes softer and 3. (smooth), you should begin to cut vegetables. I like to put some green 4. (vegetable) into the noodles. If you want to make the noodles more beautiful, you can put 5. (difference) color vegetables.

After 6. (cut) these vegetables, the dough is OK. You can press the dough into　 thin and hard piece. Then cut the piece into noodles. During you cut the piece, you should pour the w7. into the pot and heat it. When the water is boiling, you 8. (one) put noodles into the boiling water.Wait about five minutes a9. you might put vegetables into it. 10. last, add some sesame oil (香油) and salt to the noodles. A bowl of delicious noodles is OK.

九年级英语语法填空中等难度题查看答案及解析

(2019安徽B篇)Have you tried to run or walk for exercise and then given up? If you answered yes, you should try a new kind of exercise: aquatic(水中的)exercise. Aquatic exercise is like exercise on land, but you do it in a swimming pool. More and more people are trying aquatic exercise.

Aquatic exercise feels easier than exercising on land. Why? You weigh about 90% less in the pool. It is better for your knees than running or walking. Water is about 1，000 times thicker and heavier than air. To move through the water, your body has to work four times as hard. As a result, you can burn more calories(卡路里)．

In fact, most people say they feel more relaxed in the water. They stop thinking about the things that make them worried. They feel in control of their bodies. The cool, quiet environment makes them feel good.

But what if you are afraid of the water? No problem! There is nothing to worry about. Aquatic exercise is safe and easy to learn. It doesn't require any special skills. You don't even need to know how to swim. Aquatic exercise is for everyone.

Which paragraph gives opinions about “the advantages of aquatic exercise”？

A.Paragraph 1. B.Paragraph 2. C.Paragraph 3. D.Paragraph 4.

九年级英语阅读单选困难题查看答案及解析