_______ ninety-nine percent of the panda’s di...

_______ ninety-nine percent of the panda’s diet is bamboo, it also eats corn,

apples and sweet potatoes.

A. If              B. While        C. Because              D. Since

高三英语单项填空中等难度题查看答案及解析

The discovery of an ancient giant panda skull has confirmed its bamboo diet dates back more than 2 million years and may have played a key part in its survival.

A Chinese-US research team reports its results today following studies on a fossil skull found in south China’s Cuangxi Zhuang Autonomous Region in 2001.

The six fossils unearthed in Jinyin Cave are dated between 2.4 and 2 million years ago, according to the report in Proceedings of the National Academy of Sciences, an influential US journal.

Jin Changzhu, of the chinese Academy of Sciences (CAS) and lead author of the paper, said the smaller fossil skull indicates the giant pandas were about a third smaller than today’s pandas.

Researchers knew the panda reached its maximum size about 500,000 years ago, when it peaked ,and then gradually became smaller.

Jin, a paleontologist (古生物学者) at the Institute of Vertebrate paleontology and Paleoanthropology (古人类学) attached to the CAS, said the size variation was a basic rule of evolution.

“A species tends to grow bigger when it reaches the peak of its population , but becomes smaller when numbers decline,” he said.

The dental remains of the skull, which is the oldest giant panda skull ever found, are similar to today’s pandas, indicating the type of teeth that could munch (津津有味地嚼)mountains of bamboo. A panda can eat up to 40kg of bamboo per day.

Paleoanthropologist Russell Ciochon, the US co-author at the University of lowa, said the panda’s focus on bamboo could have helped it survive all these years.

“Once an animal begins to rely on a common and stable food source, such as bamboo, it tends to evolve a larger body size,” he said. “As individuals of the evolving species grow bigger, they have a better chance not to be eaten by predators (肉食动物) due to their larger body size.”

1.According to the research of the CAS , there were most pandas in the world 　　 .

A. 2 million years ago

B. between 2.4 and 2 million years ago

C. 500,000 years ago

D. Nowadays

2.The underlined word “variation” in para 6 means 　　　 .

A. fall　　　　　　　 B. change　　　　 C. increase　　　　 D. decrease

3.From the passage, we can learn 　　　 .

A. pandas began to eat bamboo 2 million years ago

B. a species tends to grow smaller when numbers decline

C. the giant pandas were about a third the size of today’s pandas

D. pandas’ bamboo has played an important role in its development

4.The passage mainly tells us that 　　　 .

A. pandas are endangered

B. pandas had a long history

C. pandas had bamboo to beat predators

D. today’s Pandas are similar to the oldest ones

高三英语阅读理解简单题查看答案及解析

It is well-known that the panda lives _____there is plenty of bamboo.

A．in the place        B．the place where    C．in which          D．where

高三英语单项填空简单题查看答案及解析

In nineteen ninety-nine, twelve percent of public elementary schools in the United States required students to wear uniforms. Just three years later, estimates were almost double that.

A study of six big-city Ohio public schools showed students who were required to wear uniforms had improved graduation, behavior and attendance rates. Academic performance was unchanged.

Some middle and high schools in Texas have also joined the movement. Yet studies find mixed results from requiring uniforms. And some schools have turned away from such policies.

Supporters believe dressing the same creates a better learning environment and safer schools. The school district in Long Beach, California, was the first in the country to require uniforms in all elementary and middle schools. The example helped build national interest in uniforms as a way to deal with school violence and improve learning.

Findings in Long Beach suggested that the policy resulted in fewer behavior problems and better attendance. But researcher Viktoria Stamison, who has looked at those findings, says they were based only on opinions about the effects of uniforms.

She says other steps taken at the same time to improve schools in Long Beach and statewide could have influenced the findings. The district increased punishments for misbehavior. And California passed a law to reduce class sizes.

In Florida, for example, researcher Sharon Pate found that uniforms seemed to improve behavior and reduce violence. In Texas, Eloise Hughes found fewer discipline problems among students required to wear uniforms, but no effect on attendance.

Sociologist David Brunsma has studied school uniform policies since nineteen ninety-eight. He collected the reports in the book. In his own study, he found that reading and mathematics performance dropped after a school in rural Pennsylvania required uniforms.

Political and community pressures may persuade schools to go to uniforms to improve learning. But David Brunsma and others believe there is not enough evidence of a direct relationship. In fact, he says requiring uniforms may even increase discipline problems.

52. What’s the main idea of this passage?

A. More and more students are required to wear uniforms in the US.

B. Wearing uniforms contributes to good academic performance.

C. Researchers in the US argue for school uniform policies.

D. Evidence for school uniform policies in the US is seen as weak.

53. Which was/were the first in the US to require uniforms in all elementary and middle schools?

A. Six big-city Ohio public schools.

B. The school district in Long Beach, California.

C. Some middle and high schools in Texas.

D. Some elementary and middle schools in Florida.

54. Which of the following researchers are NOT supporters of school uniform policies?

A. Viktoria Stamison and Sharon Pate.

B. Sharon Pate and David Brunsma.

C. Eloise Hughes and Sharon Pate.

D. Viktoria Stamison and David Brunsma.

55. The underlined word “misbehavior” in the sixth paragraph probably means ______.

A. serious crime            B. bad performance

C. absence for class       D. action against wearing uniforms

56. We can infer from the passage that ______.

A. more work is needed to get better information about uniform’s effect

B. the number of schools requiring uniforms in the US will decline sharply

C. wearing uniforms has little to do with behavior and learning

D. politicians and communities won’t vote for uniform policies

高三英语阅读理解简单题查看答案及解析

In nineteen ninety-nine, twelve percent of public elementary schools in the United States required students to wear uniforms. Just three years later, estimates were almost double that.

A study of six big-city Ohio public schools showed students who were required to wear uniforms had improved graduation, behavior and attendance rates. Academic performance was unchanged.

Some middle and high schools in Texas have also joined the movement. Yet studies find mixed results from requiring uniforms. And some schools have turned away from such policies.

Supporters believe dressing the same creates a better learning environment and safer schools. The school district in Long Beach, California, was the first in the country to require uniforms in all elementary and middle schools. The example helped build national interest in uniforms as a way to deal with school violence and improve learning.

Findings in Long Beach suggested that the policy resulted in fewer behavior problems and better attendance. But researcher Viktoria Stamison, who has looked at those findings, says they were based only on opinions about the effects of uniforms.

She says other steps taken at the same time to improve schools in Long Beach and statewide could have influenced the findings. The district increased punishments for misbehavior. And California passed a law to reduce class sizes.

In Florida, for example, researcher Sharon Pate found that uniforms seemed to improve behavior and reduce violence. In Texas, Eloise Hughes found fewer discipline problems among students required to wear uniforms, but no effect on attendance.

Sociologist David Brunsma has studied school uniform policies since nineteen ninety-eight. He collected the reports in the book. In his own study, he found that reading and mathematics performance dropped after a school in rural Pennsylvania required uniforms.

Political and community pressures may persuade schools to go to uniforms to improve learning. But David Brunsma and others believe there is not enough evidence of a direct relationship. In fact, he says requiring uniforms may even increase discipline problems.

1.What’s the main idea of this passage?

A. More and more students are required to wear uniforms in the US.

B. Wearing uniforms contributes to good academic performance.

C. Researchers in the US argue for school uniform policies.

D. Evidence for school uniform policies in the US is seen as weak.

2.Which was/were the first in the US to require uniforms in all elementary and middle schools?

A. Six big-city Ohio public schools.

B. The school district in Long Beach, California.

C. Some middle and high schools in Texas.

D. Some elementary and middle schools in Florida.

3.Which of the following researchers are NOT supporters of school uniform policies?

A. Viktoria Stamison and Sharon Pate.

B. Sharon Pate and David Brunsma.

C. Eloise Hughes and Sharon Pate.

D. Viktoria Stamison and David Brunsma.

4.The underlined word “misbehavior” in the sixth paragraph probably means ______.

A. serious crime     B. bad performance

C. absence for class D. action against wearing uniforms

5.We can infer from the passage that ______.

A. more work is needed to get better information about uniform’s effect

B. the number of schools requiring uniforms in the US will decline sharply

C. wearing uniforms has little to do with behavior and learning

D. politicians and communities won’t vote for uniform policies

高三英语阅读理解中等难度题查看答案及解析

Just as Professor Scotti often ____ it, success is ninety-nine percent mental attitude．

A．gets                             B．makes          C．puts       D．means

高三英语单项填空中等难度题查看答案及解析

Just as Professor Scotti often ________ it, success is ninety-nine percent mental attitude.

A. gets                                   B. makes

C. puts                                   D. means

高三英语单项填空困难题查看答案及解析

Though it is mere 1 to 3 percent of the population,the upper class possesses at least 25 percent of the nation’s wealth.This class has two segments:upper-upper and lower- upper.Basically,the upper-upper class is the“old rich”-families that have been wealthy for several generations-an aristocracy of birth and wealth.Their names are in the Social Register,a listing of acceptable members of high society.A few are known across the nation,such as the Rockefellers,Roosevelts,and Vanderbilts.Most are not visible to the general public.They live in grand seclusion(深居简出),drawing their income from the investment of their inherited wealth.In contrast,the lower-upper class is the“new rich”. Although they may be wealthier than some of the old rich,the new rich are anxious to make their money like everybody else lower than their class.Thus their prestige(威望) is generally lower than that of the old rich,who have not found it necessary to lift a finger to make their money,and who tend to look down upon the new rich.

However its wealth is acquired,the upper class is very,very rich.They have enough money and leisure time to cultivate an interest in the arts and to collect rare books, paintings,and sculptures.They generally live in exclusive areas,belong to exclusive social clubs,communicate with each other,and marry their own kind-all of which keeps them so distant from the common people that they have been called the out-of-fight class.More than any other class,they tend to be conscious of being members of a class.They also command an enormous amount of power and influence here and abroad,as they hold many top government positions,run the Council on Foreign Relations,and control multinational corporations.Their actions affect the life of millions.

1.

According to the author,the“old rich”get riche_________.

A.through the Social Register          B.through their reputation

C.by investing their inherited wealth     D.by collecting paintings and sculptures

2.

The reason why the“old rich”look down upon the‘new rich’is that         .

A.the former are wealthier than the latter

B.the latter sweat themselves to make money

C.the“new rich”have no interest in arts

D.the“old rich”are conscious of being members of the upper class

3.

The upper class is also called the out-of-sight class because_________.

A.they keep away from the general public

B.they spend most of their time abroad.

C.they don’t communicate with any people

D.they move frequently from place to place

4.

We can learn from the passage that_________.

A.the upper class is powerful and influential

B.the upper class collects rare books to make money

C.the upper class holds all top government positions

D.the“old rich”make much more money than the“new rich”

高三英语阅读理解简单题查看答案及解析

The factory used 65 percent of the raw materials,the rest of which　 　　　　　 saved for other purposes.

A.is　　 B.are　　 C.was　　 D.were

高三英语单项填空中等难度题查看答案及解析

Oil is essential for modern life. About 64 percent of the world’s oil is located in the Middle East, but the heaviest consumers of oil are Europe, America, and Japan. The problem lies in getting the oil from the countries that produce it to the countries that consume it. This is mainly done using oil tankers. Usually the oil is shipped safely and with no problems, but occasionally there is a disaster.

Every year millions of tons of oil are spilled into the ocean. Although this is only a small percentage of the total amount shipped around the world each year, this spilled oil can have terrible effects on ocean life, including the coastlines where the oil washes up onto shore.

One of the worst oil spills in history occurred along the Alaskan coastline in 1989, when the Exxon Valdez tanker got stuck off the coast of Alaska, spilling 42 million liters of oil. Although it wasn’t the largest oil spill, the disaster was terrible because it occurred in such a sensitive natural area. In this spill, the tanker’s captain, who was tired from overwork and drinking alcohol, had gone to take a rest. He gave control of the ship to another sailor, who was unfamiliar with the route. The ship ran onto Bligh Reef. Damaged by the reef, the ship leaked oil out into the ocean. More than 1,600 kilometers of coastline were affected by the oil spill. Many birds and otters died as a result of the oil covering their skin, and many other sea creatures and the animals that fed on them were also severely affected.

1.Which country is NOT among the largest consumers of oil?

A. Japan　　 B. Iraq

C. America　　 D. Germany

2.What does the underlined “them” refer to?

A. The birds.　　 B. The otters.

C. The sea creatures.　　 D. The birds and the otters.

3.Which of the following statement is true?

A. The oil leak of Alaska is because the captain was unfamiliar with the route.

B. Many birds and otters died from eating the spilled oil.

C. Alaska spill was the most serious spill of all time.

D. Although some oil leak is not serious, it will affect ocean life.

高三英语阅读理解简单题查看答案及解析