D
As they migrate（迁移），butterflies and moths choose the winds they want to fly with，and they change their body positions if they start floating in the wrong direction．This new finding suggests that insects may employ some of the same methods that birds use for traveling long distances．Scientists have long thought that insects were simply at the mercy of the wind．
Fascinating as their skills of flight are，migrating behavior has been difficult to study in insects because many long distant trips happthousands of feet above ground．Only recently have scientists developed technologies that can detect such little creatures at such great heights．
To their surprise，though，the insects weren’t passive travelers on the winds．In autumn，for example，most light winds blew from the east，but the insects somehow sought out ones that carried them south and they positioned themselves to navigate directly to their wintering homes．
Even in the spring，when most winds flowed northward，the insects didn’t always go with the flow．If breezes weren’t blowing in the exact direction they wanted to go，the insects changed their body positions to compensate．Many migrating birds do the same thing．
The study also found，butterflies and moths actively flew within the air streams that pushed them along．By adding flight speeds to wind speeds，the scientists calculated that butterflies and moths can travel as fast as 100 kilometers an hour．The findings may have real-world applications．With climate warming，migrating insects are growing in number．Knowing how and when these pests move could help when farmers decide when to spray their crops．
71．What’s the main idea of the text?
A．Insects migrate with the seasons．     B．Wind helps insects greatly in migrating．
C．Windsurfing insects have real direction．D．Scientists have trouble in observing insects．
72．Scientists originally thought that____________．
A．insects always waited for their favourable winds
B．insects chose the winds they wanted to ride
C．insects were just blown about by the wind
D．insects positioned themselves in the winds
73．It is not easy to stuay the migrating behavior of the insects because____________
A．the little creatures can fly very fast     B．they have no regular migrating courses
C．the wind’s direction is hard to foresee    D．their flight is long and high above ground
74．We can learn from the text that______________.
A．insects fly in the way birds do
B．insects travel more easily in autumn
C．insects never position themselves when flying low
D．insects rest a lot when the wind pushes them along
75．According to the passage，the findings can              ．
A．increase insects in number         B．instruct farmers when to spray
C．prevent climate warming       D．help protect insects

D

       As they migrate（迁移），butterflies and moths choose the winds they want to fly with，and they change their body positions if they start floating in the wrong direction．This new finding suggests that insects may employ some of the same methods that birds use for traveling long distances．Scientists have long thought that insects were simply at the mercy of the wind．

       Fascinating as their skills of flight are，migrating behavior has been difficult to study in insects because many long distant trips happthousands of feet above ground．Only recently have scientists developed technologies that can detect such little creatures at such great heights．

       To their surprise，though，the insects weren’t passive travelers on the winds．In autumn，for example，most light winds blew from the east，but the insects somehow sought out ones that carried them south and they positioned themselves to navigate directly to their wintering homes．

       Even in the spring，when most winds flowed northward，the insects didn’t always go with the flow．If breezes weren’t blowing in the exact direction they wanted to go，the insects changed their body positions to compensate．Many migrating birds do the same thing．

       The study also found，butterflies and moths actively flew within the air streams that pushed them along．By adding flight speeds to wind speeds，the scientists calculated that butterflies and moths can travel as fast as 100 kilometers an hour．The findings may have real-world applications．With climate warming，migrating insects are growing in number．Knowing how and when these pests move could help when farmers decide when to spray their crops．

71．What’s the main idea of the text?

       A．Insects migrate with the seasons．      B．Wind helps insects greatly in migrating．

       C．Windsurfing insects have real direction．D．Scientists have trouble in observing insects．

72．Scientists originally thought that____________．

       A．insects always waited for their favourable winds

       B．insects chose the winds they wanted to ride

       C．insects were just blown about by the wind

       D．insects positioned themselves in the winds

73．It is not easy to stuay the migrating behavior of the insects because____________

       A．the little creatures can fly very fast     B．they have no regular migrating courses

       C．the wind’s direction is hard to foresee    D．their flight is long and high above ground

74．We can learn from the text that______________.

       A．insects fly in the way birds do

       B．insects travel more easily in autumn

       C．insects never position themselves when flying low

       D．insects rest a lot when the wind pushes them along

75．According to the passage，the findings can               ．

       A．increase insects in number          B．instruct farmers when to spray

       C．prevent climate warming        D．help protect insects

Even though she’s just 5 years old, Cindy Smart speaks five languages. She’s a good reader. She can tell time and do simple math, including multiplication and division. Cindy looks like an average doll, with long, blond hair, baby-blue eyes, and a button nose.

But loaded with some devices, Cindy is the first doll that can see, think, and do as she’s told. The eagle-eyed Cindy follows in the path of other breakthrough toys like Sony’s barking Robot Aibo, which was the first to popularize voice command in the late 1990s. Cindy takes Aibo’s innovations(创新) one step beyond: she not only follows instructions but also recognizes shapes, colors and words, and remembers. The effect is a doll that appears to be learning.

The toy company which produced Cindy Smart spent a decade trying to see how much human nature it could breath into an inanimate(无生命的) object. Its engineers began creating minibots that sense light, sounds, and pressure. However, without the sense of sight, their toys seemed to be lacking in one of the abilities that life-forms use to react to their environment.

So how do the engineers make a doll actually see? In Cindy’s case, it’s a multistep process. When presented a text like “I love you” and asked “Can you read this?” Cindy identifies it as one of 70 preprogrammed commands. Then the inbuilt digital camera scans a 15-degree radius in search of number- or letter-shaped objects. Buried in her stomach, Cindy’s 16-bit microprocessor compares the text with her database of 700 words. If it’s a match, “ I love you,” she says.

1. This passage most likely appears in a _______________.

A. medical report                       B. classified ad

C. science journal                      D. music magazine

2. According to the passage, which of the following statements is true about Robot Aibo?

A. It could recognize shapes and colors.

B. It could respond to spoken commands

C. It came onto the market no later than 1990

D. It was created much later than Cindy Smart

3. The underlined “ it ” in the third paragraph most likely refers to _____________.

A. the process          B. the object          C. the doll         D. the company

4. According to the passage, how can Cindy “see ”?

A. She recognizes any text as “I love you”

B. She is equipped with a camera to search for text

C. She is instructed by an engineer standing next to her

D. She makes contact with the shapes of the text with her stomach

Even though she’s just 5 years old, Cindy Smart speaks five languages. She’s a good reader. She can tell time and do simple math, including multiplication (乘法) and division. Cindy looks like an average doll, with long, blond hair, baby – blue eyes, and a button nose.

But loaded with some devices, Cindy is the first doll that can see, think, and do as she’s told. The eagle – eyed Cindy follows in the path of other breakthrough toys like Sony’s barking Robot Aibo, which was the first to popularize voice command in the late 1990s. Cindy takes Aibo’s innovations (创新) one step beyond: she not only follows instructions but also recognizes shapes, colors and words, and remembers. The effect is a doll that appears to be learning.

The toy company which produced Cindy Smart spent a decade trying to see how much human nature it could breathe into an inanimate (无生命的) object. Its engineers began creating minibots that sense light, sounds, and pressure. However, without the sense of sight, their toys seemed to be lacking in one of the abilities that life – forms use to react to their environments.

So how do the engineers make a doll actually see? In Cindy’s case, it’s a multistep process. When presented a text like “I love you” and asked “Can you read this?” Cindy identifies it as one of 70 preprogrammed commands. Then the inbuilt digital camera scans a 15 – degree radius (半径) in search of number – or letter – shaped objects. Buried in her stomach, Cindy’s 16 – bit microprocessor compares the text with her database of 700 words. If it’s a match, “I love you,” she says.

1．This passage most likely appears in a         .

      A．medical report      B．classified ad         C．science journal        D．music magazine

2．According to the passage, which of the following statements is TRUE about Robot Aibo?

       A．It could recognize shapes and colors.

       B．It could respond to spoken commands.

       C．It came onto the market no later than 1990.

       D．It was created much later that Cindy Smart.

3．The underlined “it” in the third paragraph most likely refers to          .

       A．the process          B．the object            C．the doll                D．the company

4．According to the passage, how can Cindy “see”?

      A．She recognizes any text as “I love you”.

       B．She is equipped with a camera to search for text.

       C．She is instructed by an engineer standing next to her.

       D．She makes contact with the shapes of the text with her stomach.

5．What can we infer from this passage?

       A．Cindy can learn exactly like a human.

       B．Cindy has much more human nature than Aibo.

       C．Cindy is the first doll that can see, think, and do as she’s told.

       D．Cindy has no ability to react to her environment.

D

Seeing a volcano erupt (喷发) is a wonderful experience, and you can really feel the beat by climbing to the summit(山顶) of Pacaya for a close-up view. There are guided tours every day up this highly active volcano from Antigua. Giving travelers a chance to see Mother Nature at her most powerful.

Pacaya is an easy drive from Antigua, a beautiful city with many colorful houses along its old streets that are turned into art-works during its Holy Week festival. No matter when you come to Antigua, you won’t miss the Pacaya-tour companies.

But climbing Pacaya is no easy job: it is 2560 metres high, and reaching the summit takes two to three hours of seemingly one-step-forward and two-step-back movements. As you climb, you hear the dull sounds of eruptions high above. Steaming. Hot remains from recent eruptions begin to line the path as you near the active summit; the McKenney Cone(火山锥). Just as though you were going to walk over to the edge of the cone, the road turns to the left and up to the relative safety of the old, inactive summit.

Many tours are timed so that you arrive at the cone of the volcano is plenty of time for sunset and the full contrast between the erupting red lava(熔岩) and the darkening sky. On a good day the view from the summit is extremely exciting. The active mouth boils, sending red lava over its sides, and once in a while shoots hot streams up to 100 metres into the air. There is a strong bad smell in the air even if you take care to be upwind of the cone. As evening turns deeper into the night. the burning lava quietly falls down tae side of the volcano. For you, too, it is time to get down .

What is the main purpose of this passage?

  A. To attract tourists to Pacaya.           B. To describe the beauty of Pacaya.

  C. To introduce guided tours to Pacaya.    D. To explain the power of nature at Pacaya.

Antigua is a city      .

   A. where people can enjoy cultural festivals    B. where the daring Pacaya tour starts

   C. that gives a close-up view of Paraya      D. that is famous for its tour companies

Climbing to the McKenney Cone, people will     .

   A. walk directly to the active summit    B. hear the continuous loud noise from above

   C. make greater efforts than to other summits

   D. see a path lined with remains of earlier eruptions

Many tours are timed for people to      .

   A. get down the mountain in time when night falls

   B. avoid the smell from the upwind direction of the cone

   C. enjoy the fantastic eruption against the darkening sky

   D. appreciate the scenery of the 2560-metre-high mountain