Volunteers are making use of every minute to_...

Volunteers are making use of every minute to________ their foreign languages because language volunteers must pass a written test and an interview.

A. put up　　 B. polish up　　 C. take up　　 D. make up

高二英语单项填空中等难度题查看答案及解析

In Beijing volunteers are making use of every minute to ________ their foreign languages because language volunteers must pass a written test and an interview.

A. polish up            B. take up              C. put up          D. make up

高二英语单项填空中等难度题查看答案及解析

You should make good use of every _______minute to study

高二英语单项填空中等难度题查看答案及解析

Every minute must be made full use of ________ spoken English.

A．to practice            B．practising            C．practise            D．practised

高二英语单项填空中等难度题查看答案及解析

Tablets（平板电脑） are useful devices, but their big screens always make them as a burden to carry around without a bag. Wouldn’t it be great if there were a phone with the powers of a tablet that could be folded up and fit neatly into the hand? Now something like a tablet-shaped but foldable（可折叠的） phone is about to become available. In February, Samsung and Huawei both introduced foldable phones, the Galaxy Fold and Huawei Mate X separately, to the public for the first time. Mobile phone use has entered the “foldable future”, the Verge noted.

The technology could change our lives in significant ways. These devices, due to their bendable screens, give us the larger screens we want but still fit easily into the pocket. The technology could change other devices too. For example, we could make TVs that stick to walls like posters, or fold up easily to hide away in drawers, which could help increase available space to the maximum. In a keynote address, Justin Denison, Samsung’s senior vice president, called the foldable screen “the basis for the smartphone of tomorrow”. “It’s a blank canvas (画布) for us to do something beautiful together,” he said.

So is there nothing to stand in the way of the foldable future? According to tech news website Android Authority, the necessary displays were difficult to produce. In 2012, nine out of ten foldable screens produced were defective or unusable. Today, that 10 percent rate has been improved to almost 90 percent. However, at present these foldable devices are expensive. For example, the price of Huawei Mate X is 17, 500 RMB. That's a price that few people will be able to afford.

But if the foldable device isn’t going to change the world overnight, there is no doubt that it is coming. Patrick Moorhead, an industry expert told The Verge, “Few are debating if foldable mobile displays are the future of smartphones; the only question is when and by whom.”

1.What do we know about foldable devices?

A.They are too big to fit into the pocket.

B.They could bring us much convenience.

C.They have become available in January.

D.They are a burden to carry around without a bag.

2.What can we learn from Denison’s words?

A.The foldable screen has great potential.

B.The technology could change other devices too.

C.There must be many problems with the technology.

D.The production of foldable phones will soon decrease.

3.What does the underlined word in Paragraph 3 mean?

A.complete B.proper

C.imperfect D.normal

4.What can be a suitable title for the text?

A.Types of foldable phones.

B.The coming of foldable devices.

C.Popular devices on the market.

D.Difficulties in producing foldable phones.

高二英语阅读理解中等难度题查看答案及解析

Grasshoppers are having to change their song — one of the iconic sounds of summer — to make themselves heard above the noise of road traffic, ecologists have discovered. The study, published in the British Ecological Society's journal Functional Ecology, is the first to show that human-made noise affects natural insect populations. Animals use sound to communicate for many reasons, including marking out territory, warning of predators and finding mates, and although previous research shows birds, whales and even frogs change their calls in noisy environments, the impact of human-made noise on insects has been neglected until now. Ulrike Lampe and colleagues from the University of Bielefeld in Germany caught 188 male bow-winged grasshoppers, half from quiet locations and half from beside busy roads. The grasshoppers use their song to attract mates.

The team then studied the differences in the two groups' songs in the laboratory. To encourage them to sing they exposed the males to a female grasshopper, and then recorded their courtship songs. Analysis of almost 1,000 recordings revealed grasshoppers living beside noisy roads produced different songs to those living in quieter locations.

According to Lampe: "Bow-winged grasshoppers produce songs that include low and high frequency components. We found that grasshoppers from noisy habitats increase the volume of the lower-frequency part of their song, which makes sense since road noise can mask signals in this part of the frequency spectrum(频谱)."

The team's findings are important because traffic noise could be upsetting the grasshopper's mating system(交配系统). "Increased noise levels could affect grasshopper courtship in several ways. It could prevent females from hearing male courtship songs properly, prevent females from recognizing males of their own species, or impair females' ability to estimate how attractive a male is from his song," Lampe explains.

Having discovered that human-made noise affects insect communication, the researchers now want to learn more about how the mechanism works, and whether the grasshoppers adapt to noise during their development as larvae（幼虫）, or whether males from noisy habitats produce different songs due to genetic differences.

The bow-winged grasshopper is a common species in Central Europe. Adults occur mainly between July and September, preferring dry grasslands. Around 1.5 cm long, they vary in colour from green and browns to red and purple. The male's song consists of 2 second-long phrases that increase in amplitude (振幅) towards the end. The beginning of a phrase is characterized by slower ticking sounds that increase in speed and amplitude, leading to a buzzing sound towards the end of the phrase. A courtship song usually includes 2 phrases.

1.The author wrote the article to _________________.

A. introduce how grasshoppers make noises to attract mates.

B. raise the awareness of protecting bow-winged grasshoppers.

C. inform us of a recent discovery of ecological research.

D. warn us that human-made noise has changed ecological system.

2.Which of the following could be the main idea of the passage?

A. Bow-winged grasshoppers use their songs to communicate.

B. Grasshoppers change their songs to adapt to the noisy environment.

C. Grasshoppers’ songs include both low and high frequency components.

D. Bow-winged grasshoppers are a common species in Central Europe.

3.What does the underlined word “impair” in the fourth paragraph mean?

A. repair　　　　　 B. develop　　　　　

C. weaken　　　　　　 D. improve

4.Which of the following statements is true according the passage?

A. Road noise can cover the lower-frequency part of their song.

B. Animals make sounds only for the purpose of finding mates.

C. Grasshopper larvae learn to adapt to human-made noise.

D. Bow-winged grasshoppers grow up into adults in spring.

高二英语阅读理解中等难度题查看答案及解析

Some parents are just too protective.They want to _______ their kids from every kind of danger,real or imagined.

A. spot       B. dismiss        C. shelter        D. distinguish

高二英语单项填空中等难度题查看答案及解析

Some parents are just too protective. They want to _______ their kids from every kind of danger, real or imagined.

A. spot                                  B. warn                               C. shelter                      D. assist

高二英语单项填空中等难度题查看答案及解析

Many people are not________the danger of their children's bad habits, which     lead to failing to make their dreams come true.

A．well aware to      B．very aware of      C．aware that         D．well aware of

高二英语单项填空中等难度题查看答案及解析

Volunteers give their time and money to help those in need. Those who cannot give time are encouraged to give donations to volunteer organizations. Nonprofit organizations around the world seek volunteers to feed the homeless, build houses and encourage people who suffer. Here are some of the well-known,

Habitat for Humanity

Founded in 1942, Habitat for Humanity has built over 400,000 homes and served more than 2 million people around the world. It helps create affordable homes for those affected by natural disasters and homelessness. Its goal is to achieve a world without poor or homeless people.

Peace Corps

Over 200,000 Peace Corps volunteers have worked in 139 host countries around the world. This volunteer organization began in 1960, working on AIDS relief, business development and information technology around the world. In 2011, 37% of it’s volunteers were serving in Africa, 24% in Latin America and 21% in Eastern Europe and Central Asia. It aims to promote world peace and friendship.

Make-A-Wish Foundation

The Make-A-Wish Foundation is a globally known volunteer organization seeking to help children with life-threatening (威胁生命的) medical conditions. The organization was founded in 1980 and has reached more than 193,000 children around the globe. Children with life-threatening medical conditions are selected to have a personal wish come true. This organization creates an unforgettable experience for a child in need.

Volunteers of America

Volunteers of America is a nonprofit organization that has helped over 2 million people in the　 US. It’s famous in the US for its human services programs for at-risk youths, the elderly and homeless people. Approximately 70,000 volunteers help this organization reach its aim. For over 115 years, it's brought meals, medicine and warmth to people in need in the US.

1.What's the author's purpose in writing the text?

A. To appeal for volunteers and donations.

B. To explain how volunteer organizations work.

C. To give more information about voluntary work.

D. To introduce some famous volunteer organizations.

2.What is the aim of Habitat for Humanity?

A. To remove poverty and homelessness.

B. To promote world peace and friendship.

C. To help sick children realize their dreams.

D. To provide free medicine for people in need.

3.What makes Volunteers of America different from the other three?

A. The depth of its influence.　　 B. The range of its service.

C. The number of its volunteers.　　 D. The variety of its work.

高二英语阅读理解中等难度题查看答案及解析