Psychology（心理学）tells us that many people hate to take risks. But it is good for us to take risks, especially when the risk is to achieve a desired(渴望的) result. In that way, we become stronger and braver.

Our human nature should be to take risks, but some people just sit and wish they didn’t have the fear to move on. This is because they failed a few times in their lives. Please step out and don’t let the past hold you back from living life to the fullest. Move forward and move on! In studying the psychology of taking risks, we find that human nature provides us with the desire to experiment and take chances.

Risk taking is a great advantage that allowed our ancestors(祖先) to become stronger and stronger day by day. By taking risks they fought off enemies and discovered new territories（领土）. This attitude has become a part of our modern culture. Riding a roller coaster is a common risk taking activity. Even each person seems to enjoy the risk although they have the understanding that it is dangerous. This psychological and biological (生物学的) connection creates an interesting connection between what is unsafe and what humans enjoy.

Getting in a car each day is a risk. Getting out of bed is a risk, too. We need to take risks so that we can complete many things. Astronauts take risks when they get inside a rocket(火箭); however, the things they achieve are great. Businessmen take a risk when they buy parts of a company. However, without doing that, they could not make more money.

We need to take risks so that we can gain(获得) something. It is impossible to move forward in life, earn money, enjoy a relationship, play a sport, or do anything else without taking a risk. It is all part of the game. It’s one of the most important parts of life.

1.Some people don’t want to take risks, mainly because ___________.

   A. they are too lazy to move on

   B. they feel pleased with the present life

   C. they have failed several times before

   D. they show little interest in the strange world outside

2.What does the underlined part “This attitude” in Paragraph 3 mean?

   A. Taking risks                          B. Fighting off enemies

   C. Discovering new territories           D. Becoming stronger and stronger

3.What can we infer from the passage?

   A. Daily life is full of risks.

   B. The safest place has the greatest risk.

   C. People should take risks when they are young.

   D. We can always achieve our goals by taking risks.

4. Businessmen take a risk in order to __________.

   A. sell parts of a company

   B. complete many things

   C. make more money

   D. get inside a rocket

5.What would be the title for the passage?

   A. Taking risks is easier said than done    B. Risks taken by ancestors

   C. Live our life to the fullest              D. No risk, no gain.

根据句意或句子的语法要求，用括号中所给词的适当形式填空。
【小题1】It seemed that the victim had several          (enemy).
【小题2】The story          (it) is wonderful, but the actor doesn’t act well.
【小题3】So far, the police         (catch) several suspects of the crime.
【小题4】Be quiet! We         (not allow) to make much noise in the reading room.
【小题5】As an excellent teacher, she devoted most of her time to         (teach) her students.
【小题6】There is a risk of being killed here, so we will move to another place for         (safe).
【小题7】Most people hate wars, we want to live          (peace) in the world.
【小题8】My little sister was very sad because of her favourite dog’s      (die).

Stop. Listen! What do you hear? You may hear many different sounds. Some of those sounds may be noise. Noise is a loud or unwanted sound.
Noise can be caused by many kinds of machines, such as motorcycles, jet planes, farm tractors(拖拉机), rock music is also noise.
What happens to people who live near noisy machines or use them over a period of time? Doctors have found that these people have trouble in sleeping. But, most important, constant(不断的) loud noise can cause a loss of hearing.
Scientists use a unit of measure called decibel(分贝) to measure the loudness of a sound. The sound of a quiet room, for example, measures 35 decibels. Talking measures between 40 and 65 decibels. Sounds from traffic and from some rock bands can measure over 120 decibels. Noise at this high level(层次) causes the great hearing loss.
根据短文内容，选择正确的答案（每小题1分，共5分）
【小题1】According to the passage, noise is      .