UNIT 5-Into the wild单元能力测试卷
  时间：100分钟  　满分：120分
选择题部分
第二部分　阅读理解(共两节，满分35分)
第一节(共10小题；每小题2.5分，满分25分)
阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。
A
Up until now, it has been believed big cats like the leopard (豹) originated in parts of Africa. However, an ancient skull unearthed recently indicates that big cats originated in central Asia—not Africa as widely thought, paleontologists (古生物学家) reported on Wednesday.
Dated at between 4.1 million and 5.95 million years old, the fossil is the oldest remains ever
found of a pantherine felid, as big cats are called. The previous felid record holder—a tooth fragment (碎片) found in Tanzania—is estimated to be around 3.8 million years old.
The evolution of big cats has been hotly discussed, and the issue is complicated by a lack of fossil evidence to settle the debate.
“This find suggests that big cats have a deeper evolutionary origin than previously suspected，” said Jack Zeng, a paleontologists  of the University of Southern California who led the probe (调查)．
Zeng and his team made the find in 2010 in a remote border region in Tibet. The fossil was found stuck among more than 100 bones that were probably deposited by a river that exited a cliff. After three years of careful comparisons with other fossils, using DNA data to build a family tree, the team is convinced the creature was a pantherine felid.
The weight of evidence suggests that central or northern Asia is where big cats originated some 16 million years ago. They may have lived in a vast mountain shelter, formed by the
uplifting Himalayas, feeding on equally remarkable species such as the Tibetan blue sheep. They then dispersed (分散) into Southeast Asia, evolving into the clouded leopard, tiger and snow leopard families, and later movements across continents saw them evolve into jaguars and lions.
The newly discovered felid has been called Panthera Blytheae, after Blythe Haaga, daughter of a couple who support a museum in Los Angeles, the university said in a news release.
1．According to the passage, why is the origin of big cats a hot issue?
A．Because not many fossils have been found.
B．Because they moved across continents.
C．Because no equipment was available for accurate analysis.
D．Because they have evolved into many different species of felid.
2．Where was the new felid fossil found?
hibernatingA．In Tanzania.    B．In Tibet.
C．In California.    D．In Southeast Asia.
3．What is the purpose of this passage?
A．To promote wildlife conservation.
B．To report on a new find in paleontology.
C．To introduce a new animal species.
D．To compare the family trees of pantherine felids.
B
One night, Pilar was in a deep sleep when she was woken by her cat Inti. Inti was meowing wildly outside Pilar's bedroom and throwing himself against the closed bedroom
door. When Pilar opened her eyes, she saw that her bedroom was filled with smoke. As she escaped her house with Inti in her arms, she saw that a fire was burning in her kitchen. Pilar could easily have lost her life, but Inti would not let that happen. Even though Inti could have escaped the house through a cat door, he wouldn't leave Pilar.
As amazing as this story is, it is not as uncommon as you may think. Take the example of Charlotte Lee and her horse, Thunder. One summer night, the whole family was asleep with the windows open. It was normally very quiet where they lived. Suddenly, there was a loud noise. Charlotte woke up from her sweet dream, and the noise continued. Then she heard a horse running fast towards the house. The next thing she saw was Thunder standing outside her window, neighing (嘶叫) and shaking his head. She knew something was wrong. Charlotte quickly got everyone out of the house before the earthquake hit. Thunder has saved her life.
There are also stories of wild animals coming to the rescue of humans. One animal known to be a friend of humans is the dolphin. Once, Todd Endris was surfing with his frie
nds when he was attacked by a 13­foot (4­meter) shark. In the middle of the attack, a group of dolphins came to his rescue by forming a protective ring around Endris until he could get safely to shore. Without the help of the dolphins, there is little chance that Todd could have escaped.
No one is sure why animals have so often come to our rescue. However, it is clear that humans and animals enjoy a close relationship. It is important that we care for them as much as we can.
4．Why did Inti throw himself against the door?
A．He was trying to wake up his owner.
B．He wanted to get out of the room.
C．He felt bored and was playing by himself.
D．He couldn't find the way out because of smoke.
5．Before the earthquake hit, Charlotte         .
A．closed the windows
B．was sleeping deeply
C．ran to warn her neighbors
D．got her horse out of the stable
6．Both Inti and Thunder         .
A．were shy and quiet
B．used to make noise at night
C．were brave and smart
D．saved their owners several times
C
There are about 5,000 different kinds of ladybugs (瓢虫) in the world. They are also known as lady beetles or ladybird beetles. They come in many different colors and patterns, but the best­known in North America is the seven­spotted ladybug, with its shiny, red­and­black body.

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