A dense wave of smog began in the Chinese city of Harbin and the surrounding Heilongjiang, Jilin, and Liaoning Provinces on 20 October 2013. Unseasonably warm temperatures with very little wind across northeastern China coincided with the smoke from local farmers’ burning straws and the start-up of Harbin’s coal-powered central heating system.

Record densities of fine particulates(微粒)were measured in the city. In Harbin, the levels of PM2.5 (particulate matter) rise to 1,000 micrograms per cubic meter, worse than Beijing’s historic highs. Visibility was reduced to below 50m in parts of Harbin, and below 500m in most of the neighbouring Jilin Province. On Fa Yuen Street in Harbin, visibility of less than 5m was reported. The smog reduced after October 23, 2013 and completely broke up on October 28, 2013 by the first local snow and icy rain due to a cold front moving in from Russia.

Harbin lies in the north of China where winter temperatures can drop to -40℃, demanding a six-month heating season. Daily particulate levels of more than 40 times the World Health Organization recommended maximum level were reported in parts of Harbin. The smog remained till 23 October, when almost all monitoring stations in Heilongjiang, Jilin, and Liaoning Provinces reported readings above 200μg/m³forPM2.5. PM2.5 is the amount of particulate matter less than 2.5 micrometers in diameter in the air, with the WHO recommending a maximum 24-hour mean (平均值) of 25 micrograms per cubic meter (μg/m³). On the morning of 25 October, PM2.5 measurements in Harbin had fallen to an average of 123μg/m³.

All highways in the surrounding Heilongjiang Province were closed. In Harbin, all primary and middle schools were closed for three days and authorities stopped flights at the airports. Hospitals reported a 23 percent increase in admissions for breathing problems. However, this smog will have no influence on Harbin Ice Festival events later in December 2013.

Air pollution in Chinese cities is of increasing concern to China’s leadership. Particulates in the air can affect human health and also have influences on climate and rainfall. Pollution from the burning of coal has reduced life expectancy by 5.5 years in the north of China, as a result of heart and lung diseases.

1.One cause of the heavy smog in the northeastern Chinese cities may be _____.

A. the lasting cold weather                         

B. farmers’ burning of forests

C. too much strong wind                              

D. the start-up of heating system

2.One serious influence of the heavy smog was that_____.

A. Harbin Ice Festival would be cancelled    

B. highways in Heilongjiang were free of charge

C. all flights at the airport were cancelled    

D. doctors in hospitals were kept from working

3.The harmful smog was most serious on ______.

A. October 20      B. October 23    C. October 25     D. October 28

4.What measure might be practical to reduce the happening of heavy smog?

A. Forbidding people to own their private cars.    

B. Advocating people having one meal a day.

C. Using natural gas to cook instead of coal.      

D. Encouraging family’s coal-fired heating.

Finding acceptance is a natural desire of most people .When we are young ,it is important for us to be accepted by a group and to be seen as "cool" by our friends and classmates .To do this ,we will often take up the views and interests of the group rather than develop our own.?

Over time, however ,we have the opportunity to learn to accept ourselves .People who have done this are confident in their true abilities; they do not feel the need to create a  façade  to impress other people .They are concerned with whether their actions produce worthwhile results rather than with how they are seen by others.?

Less secure（有把握的）people are quite different .Instead of finding security in themselves, they look for other people to provide it .This kind of person constantly agree with everything others suggest ,for fear of having their own ideas refused. Secure people do not give up when faced with a difficult situation ;they say "I can "rather than "I can’t". Knowing that each day is an opportunity to use their talents to acquire good health, good friendships ,and great happiness, they always do their best.?

Recognizing the details that we cannot change about ourselves is also a sign of personal growth. We cannot change our height ,so why waste energy complaining about being short ?Our energy would be better spent on more constructive projects .Instead of thinking about personal characteristics we are not satisfied with ,we ought to focus more on what we are good at .Such expressions as "love yourself "are about self-acceptance and confidence, as well as honesty and morality .We should consider them to be good advice, and treat them as signposts showing the way to happiness within.?

1．The purpose of the author is to tell us _________.?

A．the differences between secure and less secure people?

B．the importance of accepting ourselves?

C．how to find happiness?

D．how to become secure people?

2．The author would probably agree that we should ________.?

A．be accepted by a group first ?

B．improve the personal characteristics we are not satisfied with?

C．know our own disadvantages first?

D．be confident in our true ability?

3．Less secure people are more likely to find a sense of security by ______.?

A．seeking agreement from others           B．giving themselves up to others?

C．finding fault with others                 D．changing themselves

4．Which of the following is a typical way of doing things of secure people ?

A．Asking others for advice before taking action.

B．Putting the interests of others above their own.

C．Focusing on people’s disadvantages.

D．Devoting their energy to more constructive projects.

5．The underlined word "facade” in the second paragraph probably refers to _______.?

A．a(chǎn) kind of behavior to hide one’s true feelings?

B．a(chǎn) special opportunity

C．a(chǎn) difficult question

D．a(chǎn) light atmosphere in which both sides feel at ease

Unfortunately he fell over some bricks ________ lying on the ground.

1. A.
   left
2. B.
   having left
3. C.
   leaving
4. D.
   to leave

“Boys and girls, you should ________ when having lectures,”asked the teacher．

1. A.
   behave yourself
2. B.
   behave yourselves
3. C.
   behave you
4. D.
   behave yours

______everything into consideration ,they ought to be given another chance

1. A.
   Taken
2. B.
   Taking
3. C.
   To take
4. D.
   Having taken