题目内容

4.Some of the previous examples showed how scripting attributes can         behavior. (effect)

先前的部分实例说明使用脚本控制属性可以间接地影响到人的行为。

4.have an indirect effect on

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9.But he had never imagined she was so poor and he         of her.(squeeze)

可是他没有料到她竟会那么穷,榨不出任何东西。

 While many of us use the Internet to enhance life through online shopping，bill paying，and surfing our interest areas,there is a "dark" side to the online world. It is common knowledge that many suffer from Internet addictions related to gambling and video games, blow,however,there is research indicating that social media use could lead to depression—Facebook may be harmful to your health.

  The online universe can be an intense emotionally-charged world and many may measure their own self-worth through unrealistic cyber perceptions. Pictures of partying peers and online postings can harm self-esteem if one is not included in the fun. Many teens that view these pages feel their life is comparatively inadequate. Additionally, a lot of kids think of Facebook as a popularity contest of who can have the most connections and post the coolest pictures.

  Facebook is also a place for teens to announce their accomplishments and receive accolades from their friends and family. This is an excellent way to use Facebook, and encouraging loved ones to participate in this manner is highly appropriate. On the opposite side of the spectrum, think about the kids who think they have nothing to post and nobody to comment about their suc?cesses.

  Lastly, cyber bullies(网络暴力) can sink victims to a new low. Bullying behavior can have the long lasting emotional effects. Online harassment(賸扰) is public and can potentially remain in cyberspace forever，often making it difficult for kids to recover or escape from an incident.

Using social media is one of the most common activities that kids engage in today. Re?search has also indicated that online interactions can have many benefits，including better techni?cal skills, enhanced communication abilities, and stronger social connections. If,however, you are not part of the "in-crowd"，it could lead to depression, anxiety, and other mental health concerns.

(   ) 1. Which of the following causes the depression of Facebook users?

    A. Internet addiction.   B. Comparing with others.

   C. Receiving many comments.   D. Lack of friends. 

(   ) 2. We can infer from the fourth paragraph that online bullying        .

   A.can easily be avoided

   B.is not so serious as bullying in the real world

   C.usually finishes when the incident ends '

   D.can be even more harmful than bullying in the real world

(   ) 3. According to the text， a Facebook user will not be depressed if he        .

   A.feels part of the " in-crowd"

   B.only uses it now and then

   C.keeps in touch with his friends

   D.uses it for its advantage

(   ) 4. The main purpose of the text is to        ,

   A.tell us how to make good use of facebook

   B.tell us the advantages and disadvantages of Facebook

   C.explain why Facebook can be harmful to the users

   D.analyze the common behaviors of Facebook users

 Rising temperatures, rising sea levels and other trends are having an effect on the world's sea turtles. All female turtles come ashore at nesting beaches, dig nests in the sand,lay their eggs and then return to the sea. Erosion of nesting beaches caused by rising sea level and more intense storms adds the potential for further dangers to nesting beaches where people，dogs and rats already prey on the eggs of marine turtles.

  Climate change directly affects the reproduction of sea turtles in three ways. First, sea level rise will affect significant nesting beach areas on low-level sand beaches such as Bonaire, the Maldives and the Great Barrier Reef. Second, rising temperatures increase the chance that sand temperature will exceed the upper limit for egg incubation(姅化) ，which is 34t. Third,rising temperatures bias(使偏向) the sex ratio toward females because temperature during incubation determines the sex of the egg. Loggerhead turtle nests in Florida are already producing 90 per?cent females owing to high temperatures，and if warming raises temperatures by an additional

or more,no males will be produced there.

  Adult feeding patterns are also affected by climate change. Sea grass beds are in decline, water temperature is higher on inter-tidal sea grass fiats, and coral reefs, typically feeding grounds for green turtles, are affected by bleaching(漂白) .

  Sea turtles have existed for more than 100 million years and have survived ice ages. As a result, they may be able to respond to unfavorable nesting temperatures, by seeking out new nesting sites. It may however take decades or centuries for sea turtles to re-establish and stabilize their habitats，and steady human development of coastal areas makes the availability of new hab?itat for them very limited.

(   ) 1. What will happen if sand temperature is higher than 34^3?

    A. More females will be born.   B. Turtle eggs will not hatch.

   C. Females will lay fewer eggs.   D. Newly-born turtles will die.

(   ) 2. In what way does climate change affect adult turtles?

    A. They can't find enough food.   B. They have lost their habitat.

   C. Their feeding patterns are affected.   D. Their living habits are changed. 

(   ) 3. What can we learn about Loggerhead turtle nests in Florida?

    A. They already have an imbalanced sex ratio.

    B.They can hardly survive the high temperature.

   C.No more males are produced now.

   D.Most of them die young.

(   ) 4. We can infer from the last paragraph that______ .

   A.human development constantly threaten the survival the of sea turtles

   B.climate change can't threaten the survival of sea turtles

   C.sea turtles can get used to cold climate

   D.it's easy for sea turtles to find new habitat

 For thousands of years，mankind has bred plants and animals to create more desired and useful plants and animals. For instance, modem corn has been bred to such a large size that it is no longer able to reproduce without man's assistance. Modem dairy cows produce too much milk;because if they are not often drained of milk,they could leak,burst, become infected, and possibly die. Furthermore, most domesticated dogs cannot survive in the wild even with special training. Since natural evolution is extremely slow and mankind's selective breeding pro?grams only take a few generations to produce a completely new species，natural evolution has al?ready taken a backseat to mankind's breeding programs.

 Additionally，mankind has successfully killed off several species all together. For instance， there are no more European wolves in existence and mammoths probably become extinct because of mankind. Even certain diseases have been permanently eradicated(根除) from the planet, and dozens of other diseases will soon be too. Again, natural evolution did not cause most of the ex?tinctions during humanity's reign.

 Currently, scientists are creating new species with desired characteristics in the lab signifi?cantly faster than natural evolution creates new species. In a single generation, new species can be artificially created and destroyed，while natural evolution could take thousands of years to do the same but only haphazardly(4禺然地) .Scientists are even able to replace flawed(有缺陷的) or damaged genes with different genes to attempt to cure genetic defects. This is something that natural evolution could possibly never correct.

 Eventually scientists will be able to enhance even people. For example, imagine not only correcting your eyesight with gene therapy，but also ensuring that all of your descendants do not inherit your old genes of poor eyesight too. Scientists will one day be able to enhance the mem?ory and intelligence of your children，so that they will do better in school and achieve more in life. Doctors and scientists will be able to customize babies before they are born just like picking options at a car dealership.

 In the near future，natural evolution in the genetic code of any species can be quickly fixed if desired. As a result, natural evolution is doomed.

(   ) 1. The underlined word "backseat" probably means         .

   A. powerful assistance   B. important part

   C.  bad fortune   D. secondary position

(   ) 2. We can learn from the passage that        .

   A.artificial evolution can benefit the mankind

   B.humans' flaws won't be inherited in future

   C.natural evolution can't change species' nature

   D.artificial evolution helps choose human sexes

(   ) 3. Through the passage the author mainly wants to tell the readers that        .

   A.natural evolution survives strongly

   B.natural evolution is almost dead

   C.artificial evolution brings humans interests

   D.artificial evolution causes species' extinction 

(   ) 4. We can infer from the passage that        .

   A. artificial evolution is the future   B. artificial evolution causes mess

   C.natural evolution causes species to die   D. natural evolution will completely stop

2. Do Singaporeans and the government have the resolve and determinatio       (take)

新加坡政府和人民，有接受这个挑战的毅力和决心吗？

9.The night before last,just before dinner, while my father was looking through the evening paper, he suddenly        . (let)

前天晚上，就在晚饭前，我父亲在看晚报时，突然惊呀地喊了一声。

9.        there is on report about their extinction, their output is greatly reduced, (spite)

尽管还没有鱼种绝迹的报道，但是它们的数量也大量减少。

6.Tired of getting fat,she finally decided to eat vegetables and fruit more        . (rather than)

因讨厌长胖，她终于选择多吃蔬菜和水果而不是油炸食品。

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