I remember my mother as a strong woman. She came to America when she was 12 ,enough to remember her language.  She achieved scores and grades high enough to be admitted to Duke University. With a degree in computer science,she finally became the manager of a company in New York. My mother could give fluent speeches.

  It was my mother who always stressed the importance of language. From the time I was born,I was read to. I would fall asleep to the sounds of my parents' voices,whether it was my dad's soft accent,or my mother's clear English. The flow of language was unbroken,and whether in Chinese or English,the stream of communication flowed through our house.

  One October morning in sixth grade,after my mother had left to catch the train to the city,I left the house for the bus stop. I was surprised when I saw our car,the door hanging open. As I drew closer,I saw my mother lying on the ground.- In the hospital,it was hard to believe that the lady who lay before me was my mum. My mother could not remember my name. As the leaves changed colours,it became clear that the stroke had created a wall between my mother's mind and mouth: her mind was not any less clear,but the words she spoke were not what she meant.

  The battle my mother faced taught me the importance of language. Without it,identity does not exist;relationships cannot be formed; stories cannot be told;di?rections cannot be given,and knowing anything about anyone is impossible. With?out language* communication cannot take place. Without language,one cannot ex?press the beauty of a sunset or the kindness of a stranger. The world would pass us by in silence.

5. From the second paragraph,we can know         .

   A. the author was taught to read since she was born

   B. the author's father spoke English poorly

   C. the author couldn't fall asleep without being read to

   D. the author's parents taught her language by talking a lot

6. According to the last two paragraphs,the author's mum was unable to        .

   A. think clearly

   B. express herself well

   C. speak

   D. open her mouth

7. This passage is mainly about         .

   A. a strong mother

   B. the importance of language

   C. a family disaster

   D. the significance of teaching language

  Some scientists say that animals in the ocean are increasingly threatened by noise pollution caused by human beings.

  The noise that affects sea creatures comes from a number of hu?man activities. It is caused mainly by industrial underwater explo?sions,ocean drillings,and ship engines. Such noises are added to natural sounds.. These sounds include the breaking of ice fields,underwater earthquakes,and sounds made by animals themselves.

  Decibels (分贝) measured in water are different from those measured on land. A noise of one hundred and twenty decibels on land causes pain to human ears. In water,a decibel level of one hundred and ninetyfive would have the same effect.

  Some scientists have proposed setting a noise limit of one hundred and twenty decibels in oceans. They have observed that noises at that level can frighten and confuse whales.

  A team of American and Canadian scientists discovered that louder noises can seriously injure some animals.

The research team found that powerful underwater explosions were causing whales in the area to lose their hearing. This seriously affected the whales' ability to ex?change information and find their ways. Some of the whales even died. The explo?sions had caused their ears to bleed and become infected.

  Many researchers whose work depends on ocean sounds object to a limit of one hundred and twenty decibels. They say such a limit would mean an end to important industrial and scientific research.

  Scientists do not know how much and what kinds of noises are harmful to ocean animals. However,many scientists suspect that noise is a greater danger than they believed. They want to prevent noises from harming creatures in the ocean.

1. According to the passage,which of the following is increasingly dangerous to sea creatures?

   A. The sound of a car. B. The sound of voices.

   C. Manmade noise pollution. D. The sound of steps.

2. According to the passage,natural sounds include all of the following EXCEPT     

   A. sounds made by animals themselves

   B. ocean drillings

   C. underwater earthquakes

   D. the breaking of ice fields

3. Which of the following is discussed in the third paragraph?

   A. The same noise level produces a different effect on land and in the ocean.

   B. Different places may have different types of noises.

   C. The decibel is not a suitable unit for measuring underwater noises.

   D. Different ocean animals may have different reactions to noises.

4. According to the passage,what will scientists most probably do in the future?

   A. They will work hard to reduce ocean noise pollution,

   B. They will protect the creatures in the ocean from harmful noises.

   C. They will try to set a limit of 120 decibels.

   D. They will study the effect of ocean noise pollution.

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