72. What does the underlined word "retrieve" (paragraph 2) probably mean?

A. look into   B. take apart   C. get back   D. throw away

71. Which of the following is most likely not to be a form of e-waste?

A. A mobile phone   B. A radio   C. An e-bike        D. A table

70. The sentence “Put your heart into your singing” in the last paragraph means  “_____”.

    A. devoting yourself to singing                                      B. taking trouble to sing

    C. singing happily                   D. trying your best to sing

D

Electronic waste, or e-waste, refers to electronic products that are no longer usable. This can include TVs, cell phones and computers and other office electronics, electronic toys and videos machines. Today, the average turnover（更换）rate for a computer in the United States is every two years, according to the environmental group, Greenpeace.

The group's Dai Yun says e-waste is a global problem. "The electronic industry is one of the fastest growing industries in the world. The high speed of growth in this industry means more and more electronic products are being wasted and thrown away. If no one decides to retrieve the old products and process them properly, the electronic waste will sweep over the earth like the huge wave behind me and pollute the Earth seriously."

Greenpeace works out that 20 to 50 million tons of e-waste are produced globally each year. The components（部件）in many electronic products contain harmful chemicals that pollute ground water and the environment.

At present , the U.S. has no federal law for the disposal (处理) of e-waste although a few states have e-waste recycling programs in place, but there is no law. The U.S. exports much of its e-waste to third world countries, such as India and China, where workers took apart computers for valuable parts, hoping to sell them for money. But harmful wastes expert, Dr. Bakul Rao, says that's a dangerous practice. "From now on, the recyclers are not very educated. All they know is they can retrieve copper or gold out of it. So, the easiest way to do that is leach (过滤) it out in an acid or burn it off to retrieve it. So, that's where they don't know how to deal with it, neither do they have any health systems in place. So, their exposure is more."

69. From the passage you can conclude all the following EXCEPT that _____.

    A. Carol once learned to play the piano    

    B. Carol worked as a music teacher

    C. Carol has been singing opera for 20 years or so

    D. Carol is popular with Americans and Europeans

68. Which statement is TRUE？

    A. A pop singer breathes more deeply than an opera singer when he or she sings.

    B. Opera singing is more like speaking.

    C. A pop singer takes in much more air than an opera singer when singing.

    D. An opera singer breathes differently from a pop singer when singing.

67. What is the best title for this passage?

    A. Opera Singing and Pop Singing             B. The Way an Opera Star Sings

    C. An Opera Star                            D. Singing without a Microphone

66. According to the passage, the Metropolitan Opera in New York City _____.

    A. is a five-story building                     B. can seat 4,000 people

    C. has no microphone in it                    D. can project the singer’s voice

65. We can infer from this passage that______________________.

A. China's robot landing on the moon has been successful

B. the USSR and the USA don't allow Chinese people land the moon

C. Chinese scientists show great interest in exploring Mars now

D. it is impossible for the Chinese people to land on the moon

C

Think of some of your favorite singers. When you listen, they can make you happy or sad, peaceful or angry. They can make you relax or want to get up and dance. Gifted singers have the power to affect us in many ways ― emotionally, physically and mentally.

But becoming a great singer isn’t as easy as listening to one. It takes practice, devotion and strong lungs! Just ask the well-known American opera（歌剧）star Carol Vaness.

At the Metropolitan Opera in New York City where she often sings, Carol’s voice must be loud enough to be heard by four thousand people. It must reach every person in the theater, without a microphone, even when she’s singing softly. The reason Carol can project her voice that far is the way she breathes.

“When you breathe, it’s like a swimmer taking a deep breath before going underwater, ” Carol explains. “You have to take a lot of air into your lungs.”

According to Carol, the main difference between pop singing and opera is “how you breathe, how much air you take in, and how you control it coming out. Regular singing is more like speaking, and it’s a lot softer. When I sing for children, they’re often surprised by how the vibrations strike their ears ― like waves on a beach, ” Carol says. “In opera, the air doesn’t just go out of your mouth ― it vibrates in your chest, the way a guitar vibrates when it’s played.”

Ever since she started piano lessons at the age of ten, Carol has loved music. As she got older, she decided to become a music teacher. When she went to college, she took singing lessons as part of her studies. Her voice teacher discovered that nineteen-year-old Carol had an exceptionally beautiful soprano voice ? the highest singing voice for women.

Carol decided to make opera her goal, not only because she loved to sing but also because she loved the drama. Opera is a play in which the characters sing the words instead of speaking them. The stories of opera can be tragic or comical. They can be personal stories about two people falling in love or grand stories about kings and queens who lived long ago. As the characters in an opera sing, the emotions(情感) expressed by words and music come to life.

Today, Carol performs throughout the United States and Europe and she has song for almost twenty years. But she has never forgotten where she started singing in the first palace.

“Put your heart into your singing and enjoy it,” says Carol, “because singing is a great joy. That’s why I sing. In fact, that’s why everybody sings.”

64.We think the Chinese astronaut will succeed in landing the moon in 2010 because_________________.

A. China will ask for help from the USSR and the USA

B. two countries have set up a space station on the moon

C. China has a large population in the world

D. China has its traditional technology and advanced scientists

A. A second home is going to be built on the moon in 2010.

B. China's first man has landed the moon in space.

C. People from only two countries have been to the moon till now.

D. Twelve Chinese astronauts are being trained for the manned flight to the moon.