Before the day I stepped into junior high school, I had always thought that as long as I could read, speak, and listen well, English will be a "no problem" 1 for me, and that English grammar was a piece of cake. My father 2 to tell me the importance of grammar but I just wouldn't listen. I didn't understand what's so important about the whole "grammar" thing.

    This misunderstanding didn't last long. Something unexpected happened. It was only 3that day, and I would never forget that day. I was just a young and seventh grader when our English teacher 4 to give us a quiz on English grammar. We had to fill in blanks. After I read the sentence in question number one, different kinds of answers which I thought were possible came into my mind. All of them seemed right and made sense to me, but there was only one 5 answer to it, but I didn't know which one exactly. I was shocked, but I said to myself "never mind", and went on to question number two. Unexpectedly, the same trouble that just happened, appeared right in front of me again, and it just kept happening again and again until I heard our teacher say 6"Time's up." I had to turn in my answer sheet 7 so many unsure answers on it.

    I was really sad about the whole thing. And since then, I've 8 that in English, writing grammar is quite different from spoken grammar. My father had been trying to tell me the important role grammar plays in learning English. Well, it's 9 too late to learn anything, including ENGLISH! So, I started to work on my grammar skills, and thanks to that bad 10, I really learned a lot from it! Now, I'm still on my journey of learning grammar, and I am enjoying it.

    Cars make our lives more convenient. But theycan also be a problem. For example, fossil fuel (化石燃料)cars mainly cause air pollution.

    To improve the environment, many countriesare developing electric vehicles (EVs,电动车).Among them, China is taking a leading role and has created the world's largestEV market.

    Last year, over 40 per cent of the 753,000EVs sold in the world were sold in China, more than twice as many as the numbersold in the United States.

    "Filling up a fossil fuel car with gas(汽油) is more expensive than charging (充电) an electric car," said Wu Hao, who bought an electric carthis year.

    However, there are still some problems. Itcan be hard to find charging piles (充电桩) andthe cars can't go far before being recharged.

    Some of these problems are being solved. In2014, China had 31,000 charging piles. Now China has the world's largest EVcharging network, with more than 450,000 charging piles in total.

    Developing EVs is one of many efforts thatChina has made to cut down pressure on its environment after the governmentpromised to stop increases in carbon dioxide emissions (二氧化碳排放量) by 2030.

    "As China goes, so will the world'scar industry," the Wall Street Journal said.

Feet are an important part of you. Without them, you couldn't stand up, walk or run around. Your feet work so hard that sometimes they get sweaty (出汗).

Think of a hot summer day when you have been walking around all afternoon. Your feet have been in those trainers for a long time! The moment you take off your shoes, you feel good and relaxed, but your feet smell bad. You may think it is because of the sweat. But in fact, sweat itself has no smell. It's the bacteria (细菌) on your skin (皮肤) that mix with it and gives off a bad smell.

Bacteria love dark and wet places like the inside of sweaty shoes. The sweatier you get, the more bacteria there will be. When you wear your shoes, bacteria will have a good meal on your feet. They eat dead skin cells from your skin and then leave a kind of waste called organic acids (有机酸). These organic acids smell bad. Things will become better if you wear cotton socks.

One of the things to be learnt in a foreign language is guessing. You guess what kind of thing to come when listening to someone talking. People do this all the time in their own language, so it is necessary(必要的) to do this in a foreign language, too. Here are some examples.

1. " What's thematter?""I went to a party last night, so I…"

2. "I feel so tired these days. "" I think you'd better..."

3. " Of course, she never stops talking. She is one of the most..."

You can see from the above three examples that the context(上下文) helps a lot in understanding what is being talked about. So" guessing " is very important in understanding English, especially(尤其) spoken English.

Do you like travelling？Travelling is one of the most popular activities during holidays. Modern traffic develops fast，so travelling to different places gets much easier than before. 

Travelling can keep you healthy，and can make your trip happier. But do you know how to keep healthy during a trip？The following information may be useful to you. 

Before leaving

★Wear comfortable shoes，a hat and sunglasses. 

★Take some necessary （必需的） medicines with you. You will need them when you get sick or have other problems. 

★If you do lots of sports like walking or climbing during your trip，you should do some exercise for weeks or months before you leave. While travelling

★Be sure not to eat dirty food or bad fruit. 

★Have enough time to take a rest during your trip. 

★Tap （水龙头） water is not safe，so drink bottled water. When you drink it，remember to clean the cover of the bottle. There may be something dirty on it，such as dust （灰尘）.