[填空题]
Passage 1
Energy use and air pollution have been synonymous in China for
decades, especially in urban areas. (66) Fifteen or 20 years
ago in China’s northern cities, such as Shenyang, air pollution was
characterized by decreased visibility caused by high levels of particulates and
sulfur dioxide (SO2). Although conditions have improved in modern
cities, such as Beijing and Shanghai, China still has three of the ten most
polluted cities in the world and hundreds of cities that are not in compliance
with the World Health Organization (WHO) air quality guidelines.
(67) More than 120 cities have populations of more
than one million, and by the end of the twenty-first century, 10 to 20 cities
will have populations of more than 10 million. Rapid urbanization will challenge
governments at all levels, not only to provide basic services to growing urban
populations, but also to modernize, to continue to develop economic
[填空题]Energy use and air pollution have been synonymous in China for decades, especially in urban areas. (66) Fifteen or 20 years ago in China’s northern cities, such as Shenyang, air pollution was characterized by decreased visibility caused by high levels of particulates and sulfur dioxide (SO2). Although conditions have improved in modern cities, such as Beijing and Shanghai, China still has three of the ten most polluted cities in the world and hundreds of cities that are not in compliance with the World Health Organization (WHO) air quality guidelines.
(67) More than 120 cities have populations of more than one million, and by the end of the twenty-first century, 10 to 20 cities will have populations of more than 10 million. Rapid urbanization will challenge governments at all levels, not only to provide basic services to growing urban populations, but also to modernize, to continue to develop economically, and to address environmental concerns, particular
[填空题]What have Edmond Brothers been
They have been ______.
[单项选择]
There have been several claims to have cloned humans over the past few years. Most have been bogus. But the announcement made this week by Woo Suk Hwang, of Seoul National University in South Korea, and his colleagues, is serious. It is the first to achieve the accolade of publication in a peer-reviewed scientific journal. Dr. Hwang s work appears in Science.
The terminology of human development has become slippery over the past few years, in the hands of both "life-begins-at-conception" propagandists who want to stop this sort of research, and publicity-seeking scientists who have claimed more than they have really achieved. What Dr. Hwang and his team have created is not what developmental biologists would normally refer to as an embryo. But it is a genuine scientific advance. South Korea’s researchers have taken egg cells from volunteer women, removed the nuclei from those cells (which contain only half of the genetic complement required to make a human
A. Different.
B. Fake.
C. Bold.
D. Genuine.
[单项选择]Children have been said to have brain-injured child syndrome, hyperactive (极度活跃的) child syndrome and attention-deficit disorder (ADD). As early as the 1940’s, psychiatrists have (67) children with hyperactivity and extremely distracted and impulsive (冲动的). These frequent name changes show how (68) researchers are about the causes (69) the problem and the diagnostic criteria for the disorders. In the past several years, the people who (70) attention deficit hyperactivity disorder (ADHD) have (71) to clarify the disorder’s causes and (72) , and have reasons to believe that it may be genetic. Today’s view (73) this disorder is very different from the beliefs of just a few years ago. Researchers are finding that ADHD is not a disorder of just attention, but is from a developmental (74) in the brain’s circuitry and self-control. The loss of self-control (75) other important brain functions mandatory for maintai
A. differ
B. prove
C. occur
D. accept
