Space exploration began in the 1960s, and sin...

Space exploration began in the 1960s, and since then about five hundred people________into space.

A. have traveled    B. traveled    C. had traveled    D. are traveling

高二英语单项填空困难题查看答案及解析

Nothing but some ancient Chinese coins _______ in the sunken ship since they began the exploration.

A. were found     B. was found    C. have been found    D. has been found

高二英语单项填空困难题查看答案及解析

Many science fiction stories tell about explorers arriving in a new world. The explorers then use some kind of high-tech device to test for breathable air or signs of life. But here on Earth, science fiction is becoming reality through a new sampling technology called environmental DNA, or eDNA for short. Scientists can use it to identify rare species or estimate fish populations with just a little air or water.

Environmental DNA can be used in two ways. One is to identify the creatures that live in a certain place. The other is to confirm the presence or lack of a specific creature.

Caren Goldberg is one of the first biologists to take the technology from the testing stage to actually using it. She sees eDNA as a way to get answers more efficiently and with less destruction compared to traditional survey techniques. Until recently, scientists depended on snorkeling ( 潜水), netting or using an electric current to temporarily catch fish.

This newer way to identify what lives in the environment is becoming popular around the world. Animal experts in Vietnam are using the eDNA to find the last, wild Yangtze giant softshell turtles. One researcher on the Caribbean island of Trinidad is using the sampling technology to find endangered golden treefrogs. In Madagascar, it is being used to identify amphibian(两栖动物)diseases.

Ms Goldberg has used eDNA testing to confirm the local extinction (灭绝) of a leopard frog in the American state of Idaho. She has also been asked to document the spread of the New Zealand mudsnail in the state of Washington. The creature has been found in lakes and other waterways across the state.

Scientists working with the technology say they do not expect robots to replace field biologists anytime soon. But the old-fashioned field work could soon be more targeted.

1.Compared to traditional survey techniques, eDNA is more______.

A. complex　　 B. eco-friendly

C. dangerous　　 D. convincing

2.By using eDNA, Caren Goldberg has______.

A. succeeded in catching many fishes

B. found the existence of golden treefrogs

C. documented the spread of softshell turtles

D. confirmed the disappearance of the leopard frog in Idaho

3.What can we infer from the last paragraph ?

A. Robots will replace scientists soon.

B. Some scientists are against using eDNA.

C. The old-fashioned field work may disappear.

D. Many biologists are unwilling to do the field work.

4.What is the best title for the text?

A. Science Fiction Becomes Reality for Species Surveys

B. Biologists Explore Space with the Help of eDNA

C. Scientists Found Methods to Test for Signs of Life

D. New Technologies Are Presented in Science Fictions

高二英语阅读理解中等难度题查看答案及解析

China was a latecomer to space exploration, and in the movies, it has been a latecomer to science fiction, too. That is about to change. The country's first blockbuster (大片)set in space, The Wandering Earth, opens Tuesday with great expectations that it will represent the dawning of a new age in Chinese filmmaking. The film also opens with the Lunar New Year, the beginning of an official，weeklong holiday that is traditionally a peak box-office period in China. It has a limited show in the United States, Canada，Australia and New Zealand.

The Wandering Earth, shown in 3-D, takes place in a distant future in which the sun is about to expand into a red giant and destroy the Earth. The approaching danger forces the world’s engineers to make a plan to move the planet to a new solar system using giant thrusters (推进器).Things go very badly when the Earth has to pass the Jupiter, setting off desperate disturbance to save humanity from ruin.

The film comes as China reached a milestone(里程碑)in space : the landing of a probe (探测器)on the far side of the moon in January. Although decades behind Russia and the United States, China has now put astronauts in orbit and has ambitious plans to join or even lead a new age of space exploration.

''I think there is a very close connection between Chinese cinema and the nation's fortunes,'' said Sha Dan, a leader at the China Film Archive, ''When we have the ability to rescue our people abroad, we can make movies like Operation Red Sea. Only when China can enter the space age can we make works like The Wandering Earth. ''

The Wandering Earth takes for granted China's central role in future space exploration，but it also has a vision of the international teamwork necessary to deal with the threats facing the planet, a theme that runs deeply through the film.

1.What does the author think of The Wandering Earth?

A.It is a success in science-fiction films.

B.It is a hit in the oversea film markets.

C.It is the beginning of Chinese filmmaking.

D.It is only a present for the Lunar New Year.

2.What causes the Earth to wander in space?

A.A new solar system.

B.A new planet like the Earth.

C.The expanding sun in a distant future.

D.A deadly disease for people on the Earth.

3.What is reflected throughout The Wandering Earth?

A.The importance of heroes.

B.The threats from explorations.

C.The nation's power of China.

D.The international cooperation.

高二英语阅读理解中等难度题查看答案及解析

Little Jerry was interested in stories about outer space exploration, so he gave all his pocket money to his brother ________ the novel based on such a story.

A. in favor of　　 　　　　　　　　　　 B. in exchange for

C. in return for　　　　　　　　 　　　 D. in place of

高二英语单项填空中等难度题查看答案及解析

The bell rang and came in Mr. Brown, _____ a book in his hand. Then the class began.

A. for  B. when C. with D. while

高二英语单项填空困难题查看答案及解析

The bell rang and came in Mr.Brown,    a book in his hand. Then the class began.

A．for                                  B．when                    C．with                      D．while

高二英语单项填空简单题查看答案及解析

Further space exploration has been _______ with the rapid development of China’s science and technology.

A. made it possible                                            B. made possible

C. made it possibly                                           D. made possibly

高二英语单项填空中等难度题查看答案及解析

Further space exploration has been _______ with the rapid development of China’s science and technology.

高二英语单项填空简单题查看答案及解析

The universe began with the Big Bang 13.7 billion years ago, with everything___ in space smaller than a grain of sand.

A. started          B. starting          C. to start        D. to be started

高二英语单项填空简单题查看答案及解析