阅读下列短文，从每题所给的四个选项（A、B、C、D）中，选出最佳选项

    A new study finds that young females in one group of African chimps(黑猩猩) use sticks as dolls more than their male peers (同龄) do, often treating pieces of wood like a mother chimp caring for a baby. In human cultures around the world, girls play with dolls and pretend that the toys are babies far more than boys do.

    Chimp observations, collected over 14 years of field work with the Kanyawara chimp community in Kibale National Park in Ugandan, provide the first evidence of a nonhuman animal in the wild that exhibits sex differences in how it plays. This finding supports an argument that biology as well as society underlies boys' and girls' different toy preferences.

    Stick play occurred most commonly between ages 3 and 9. Females spent a lot more time carrying sticks than males did. Young male chimps occasionally used sticks to mimic(模仿) childcare. "Far more often, they fought with sticks, an infrequent behavior among females," say Sonya Kahlenberg of Bates College in Lewiston, Maine, and Richard Wrangham of Harvard University.

    "Biological differences between the sexes make female chimps more receptive to stick-mothering than males," says Wrangham.

    Consistent with reported cultural traditions among adult chimps, Kanyawara youngsters learned from each other to play with sticks as if caring for babies. Stick play among young chimps showed no evidence of being directly influenced by older chimps. Child-bearing females never played with sticks and thus didn't model such behavior for younger chimps.

    Young females carried sticks for anywhere from a few minutes to several hours. They often rested in nests with their sticks, sometimes playing with them much as chimp mothers play with their babies though they didn't get any form of teaching from the adults.

How to enroll if you are in Midhaven…

    We invite you to visit us and see the school. After an assessment you will be able to reserve a place on the next available course. We have two centres in Midhaven.

    This is the incredible school where the headteacher's unique dedication to handwriting practice means EVERY pupil is ambidextrous.

Only ten percent of the population are left-handed, and only ONE percent can write with both hands. But all 300 students at Veena Vandini School in India can write with both their left and right hand, with some able to do both at the same time—in different languages.

    Every 45-minute lesson features 15 minutes devoted to handwriting practice, to make sure all students at the remote rural school have the skill.

    The school, which was founded in 1999, is located in a remote area, in Singrauli district, Madhya Pradesh. School founder and former solider Vp Sharma said he was inspired to demand the lessons by India's first president.

     “I read in a magazine that Dr Rajendra Prasad used to write with both hands. This inspired me to give it a try. Later, when I launched my school at my native village, I tried training the students.

     “We began training students from standard I and by the time they reach standard III, they were comfortable writing with both the hands. Students of standard VII and VIII can write with speed and accuracy. Further, they can write two scripts simultaneously, one with each hand.

     “Students also know several languages, including Urdu.”

    Mr Sharma said their unique dedication to handwriting led South Korean researchers to visit and study the pupils two years ago, to find out more about ambidexterity.

    Look and listen, and that concert poster just might be singing. Engineers have designed antennas（天线）that can turn everyday objects, from posters to clothing, into radio stations. Anyone walking or driving by can tune in and hear what's on. The devices use radio waves, but they don't generate their own. They hijack（劫持）the same waves that carry music and news to your smartphone.

    Vikram Iyer co-led the project with Anran Wang, a graduate student in computer science and engineering. The two got the idea for their invention by paying attention to what was already around them. “It's the ideal way to minimize the power consumption for any kind of communication,” notes Iyer. Their research had focused on new types of wireless communications that won't require much energy. They wanted something that would work outdoors in a city. Then they realized the air is already filled with wireless communications in the form of radio stations.

    Radio waves carry energy at the speed of light from tall transmission towers to radios in cars, phones and homes. These waves of the antennas take in existing radio waves and change them slightly. Those changes add new sound information. The changed waves are then sent back out into the world where people can listen in. So the device only needs enough power to change the waves, not to generate them.

    The scientists tested their device with a poster. It advertised a Seattle concert by Simply Three. People standing almost 4 meters away from the poster could use FM receivers on smartphones to listen to all songs of the band's music. Those in cars as far as 18 meters away could use car radios to pick up some parts of the songs

    The technology could even extend to clothes. Iyer, Wang and their team turned the shirt into an antenna. It let the shirt talk to the wearer's smartphone. If a sensor in the shirt tracked a person's heart rate during exercise, for instance, the antenna could transmit those data to the wearer's phone.

    Exhibitions in the British Museum

    Hokusai: beyond the Great Wave

    Katsushika Hokusai (1760-1849) is widely regarded as one of Japan's most famous and influential artists.He produced works of astonishing quality right up until his death at the age of 90.This new exhibition will lead you on an artistic journey through the last 30 years of Hokusai's life—a time when he produced some of his most memorable masterpieces.

    25 May—13 August 2017

    Room 35

    Adults￡12,Members/under 16s free

    Places of the mind: British watercolour landscapes 1850-1950

    Drawn from the British Museum's rich collection,this is the first exhibition devoted to landscape drawings and watercolours by British artists in the Victorian and modern eras—two halves of very different centuries.

    23 February—27 August 2017

    Room 90

    Free, just drop in

    Scythians: warriors of ancient Siberia

    This major exhibition explores the story of the Scythians—nomadic tribes and masters of mounted warfare, who flourished between 900 and 200 BC. Their encounters with the Greeks, Assyrians and Persians were written into history but for centuries all trace of their culture was lost—buried beneath the ice.

    14 September 2017—14 January 2018

    Room 30

    Adults￡16.50,Members/under 16s free

    Politics and paradise: Indian popular prints from the Moscatelli Gift

    This display is part of the Museum's contribution to the India-UK Year of Culture 2017.It looks at the popular print culture of India from the 1880s until the 1950s.

    19 July—3 September 2017

    Room 90a

    Free,just drop in