题干

在下列变化①大气固氮②硝酸分解③实验室制取氨气中,按氮元素被氧化、被还原、既不被氧化又不被还原的顺序排列,正确的是

A:①②③

B:②①③

C:③②①

D:③①②

上一题 下一题 0.0难度 选择题 更新时间:2015-12-10 05:02:23

答案(点此获取答案解析)

A

同类题1

阅读理解

B

    On August 21st, 2016, our Chinese National Women's Volleyball Team won the gold medal at 2016 Rio Olympics, 12 years after the last gold medal. All of Chinese were so excited. Thanks to the great coach named Lang Ping whom Chinese people are so proud of. Lang Ping was born in Tianjin. She was once a volleyball player of the Chinese National Volleyball Team. They won the gold medal at the 1984 Summer Olympics in Los Angeles. Lang was seen as one of the most respected  people in modern Chinese sports history. Because of her excellent skills and main role in the success of the Chinese Women's Volleyball Team in the 1980s, she is known as the "Iron Hammer ".

    In 1995, Lang as a coach led the national team and guided them to win the silver medal at the 1996 Atlanta Olympics. But in 2005, she became coach of the USA's women's team. In the 2008 Beijing Olympics, Lang led the Americans to play against Chinese National Team. In 2013, Lang became coach of China again. It could be difficult to train for the Rio Olympics. In order to get ready for it, she tried her best to teach girls skills, and she is also friendly, just like girls' mother. They get on well with each other and work together. She encouraged them all the time and told them "never give up". In fact, everyone had a strong will for their dream. Now the dream really came true.

    Their success showed the world about their great spirit. Though the success did not come easily, they can make it. Lang is regarded as the most amazing star all the time.

同类题4

阅读下列短文,从每小题所给的A、B、C、D四个选项中选出一个最佳选项。

    Reality TV is a type of programme. It means that real-life people, not actors, are followed and filmed in a real situation, or game.

    Reality TV is very popular in the UK. At their best, these programmes give us a good look into the lives of different people in Britain. At their worse, they are a very cheap way to make programmes and sometimes involve people behaving very badly.

    Here's a selection of some of the UK's reality shows.

    Shattered

    A group of young people live in a house for a week and must stay awake. Each day there are tests to see how well they can work even though they are totally tired out. They must leave the house if they fall asleep. Viewers vote on those who stay in the house and text their comments (评论) every day.

    Come to Dine with Me

    Each week four people prepare dinner in their homes for the other competitors. Each competitor then gives the cook a grade out of 10 for the food and entertainment (娱乐). The winner gets a $1,000 cash prize. Sometimes the food is terrible and the competitors are very rude to each other.

    World's Strictest Parents

    Badly-behaved British teens are sent abroad to live with a super strict family for a week. The teenagers have to follow the rules of their host family and go to the local school. After seven days the teenagers return home and their parents tell us if their behaviour is better. There is often a lot of crying and shouting in this show but it can be pretty funny too.

同类题5

根据短文理解,选择正确答案。

    Andy never wanted to go to bed on time. His parents had explained to him how important it was to go to bed early and get a good rest. But Andy paid no attention to them, and they didn't know what to do until one weekend when they were visiting Andy's grandparents.

    Grandpa Peter heard all about it and said, "This sounds like a job for Tubby." So Andy's parents loaded the cat onto the car and returned home.

That night, at bedtime, the same problem happened. Andy didn't want to go to bed, and even though his parents waited a while to see if Tubby would solve the problem, nothing happened.

    Hours later, Andy finally decided to go to bed. But what a surprise when he entered his bedroom! Tubby was in his bed, totally sprawling out, pot-belly in the air, and snoring like an express train.

    Andy tried to move the cat, but there was no way of moving him an inch. That night he hardly slept, lying on one tiny corner of his bed.

    The next day the same thing happened, even though Andy was much more tired from not having slept well. When the third day arrived, he had understood that if he wanted to sleep in his bed, he would have to get into it before Tubby did. That night, when his parents only started to mention the topic of bedtime, Andy rushed upstairs and dived into bed. His parents could not believe it. They knew nothing about Tubby in the bed, nor did they understand why Andy went to bed on time without complaint. They were so happy about this that they stayed up quite late, celebrating.