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.

    You might not pay much attention to whether the things you say on WeChat and other online messaging apps are recorded. But a regulation (规定) that went into effect on May 1 will make everything you say online usable against you in a court of law (法庭).

    According to the Supreme People's Court's regulation, text messages, emails, and content posted on websites or instant (即时的) messaging platforms can be used as evidence (证据) in civil lawsuits (民事诉讼).

    The idea of digital evidence was first introduced as part of China's Civil Procedure Law in 2012. However, the recent regulation has made it clearer.

    "This is the first time the Supreme People's Court has clarified (阐明) the scope of digital evidence, especially on social media platforms and instant messaging services," Li Ya, a lawyer in Beijing, told China Daily.

   The regulation was introduced to keep up with changes in social development. Social media activity has become a part of most people's lives. Therefore, digital evidence is playing an increasingly important role in civil and criminal lawsuits.

    According to the regulation, if people plan to use digital evidence in a lawsuit, they have to first prove that they use the app or website that the evidence comes from. Second, they must provide an original (原始的) and complete record of the evidence. For example, if you lend somebody money through WeChat, you must keep the original transfer (转账) records and conversations on the app.

    However, there are still questions about the regulation. Some point out that the regulation will not necessarily help in every case. "How to make sure a microblog was actually posted by the micro blogger is a challenge," Li said.

Singapore is a city of different cultures. Walking through the streets of Singapore, you can{#blank#}1{#/blank#} (听到)different languages spoken, such as English, Chinese and Malay. People from different cultures live and work peacefully with each other and share their traditions.

In Singapore, cultural differences are shown in building styles, shops and in many other ways. Take food as an {#blank#}2{#/blank#} (例子), each culture has its own place to sell their traditional food, but there are also the {#blank#}3{#/blank#} (著名的) hawker markets. Different foods are sold in these {#blank#}4{#/blank#} (繁忙的) markets.

And these are very {#blank#}5{#/blank#} (受欢迎的) with Singapore citizens and {#blank#}6{#/blank#} (游客) from around the world. The food is good and very{#blank#}7{#/blank#} (便宜的).

Singapore is also an interesting city. Large numbers of people, ideas, etc, are mixed together {#blank#}8{#/blank#} (在……下面)the same sky. English is used for business, {#blank#}9{#/blank#} (虽然)the official language here is Malay. Now, however, there is a strong Chinese business community and also a growing Indian business community. Singapore welcomes talented people from around the world and {#blank#}10{#/blank#} (希望)they will live there all their lives.

As winter comes, many people move to the south of China for its warmer climate(气候). However, a growing number of 36.{#blank#}1{#/blank#} have been to Harbin which is famous as the Ice City. 

It is said that Harbin's {#blank#}2{#/blank#} comes from a Manchu(满族的)word that means "a place for drying fishing nets". It is the capital of Heilongjiang Province and one of the {#blank#}3{#/blank#} cities in northeast China. 

The city developed {#blank#}4{#/blank#} with the arrival of the Chinese Eastern Railway. The railway {#blank#}5{#/blank#} it to the outside world. especially Russia. This made preparations for Harbin's future development of its {#blank#}6{#/blank#} culture where East meets West. 

The city is now famous for its Ice and Snow Festivals. Thousands of visitors from all corners of the world {#blank#}7{#/blank#} for different kinds of winter-themed activities and sports. 

Although these festivals may be the most exciting part of a {#blank#}8{#/blank#} to Harbin, the city still has much more to offer. It has not only the traditional European-style buildings but also its more {#blank#}9{#/blank#} buildings, such as the Harbin Grand Theater. The unusual food, including guobaorou. can all be {#blank#}10{#/blank#} along Zhongyang Street. 

While winter may be the best time to visit Harbin, the city has a lot to offer all year round. It is a must-see place no matter what season it is. 

Everyone is born with the ability to learn. But whether or not you can do this well depends on your learning habits. Research shows that successful learners have some good habits in common. 

Creating an interest in what they learn

Studies show that if you are interested in something, your brain is more active and it is also easier for you to pay attention to it for a long time. Good learners often connect what they need to learn with something they are interested in. For example, if they need to learn English and they like music or sports, they can listen to English songs or watch sports programs in English. This way they will not get bored.

Practicing and learning from mistakes

Good learners think about what they are good at and what they need to practice more. Remember, "use it or lose it"! Even if you learn something well, you will forget it unless you use it. Practice makes perfect. Good learners are also not afraid of making mistakes. Alexander Graham Bell did not invent the telephone overnight. He succeeded by trying many times and learning from his mistakes.

Developing their study skills

It is not enough to just study hard. You have to know how to study. Good learners find out the best ways to learn well. For example, they may take notes by writing down key words or by drawing mind maps. Good learners also look for ways to review what they have learned. They may do this by reading their notes every day or by explaining the information to another student.

Asking questions

Good learners often ask questions during or after class. They even ask each other and try to find out the answers. Knowledge comes from questioning. Learning is a life-long journey because every day brings something new. Everything that you learn l becomes a part of you and changes you, so learn wisely and learn well.