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According to this passage, the practice of "sex selection" ______.
A．can help to prevent all genetic problems
B．is totally unacceptable to ethics experts
C．was already realized five hundred years ago
D．will benefit families with certain inheritable diseases
答案
更多“According to this passage, the practice of "sex selection" ______.A．can help to prevent al”相关的问题
第1题
On line courses (also called distance learning) are a hot new trend in American education. According to the nonprofit Distance Education and Training Council, about 400 US colleges and schools offer some portion of their programs on the We b. At the university level, they cost the same as traditional classes and requir e similar weekly assignments and textbook reading, the difference is in class pa rticipation. Generally speaking, students congregate(使聚集) on line throughout each week to explore topic with the professor, but these discussions occur “asynchronously(不同时发生地)”rather than in real time. (You read others’ comments and post your own whenever you get a chance.) Written assignments are posted, you email in your work periodically, and you’re required to take a proctored exam in order to receive degree credit. Career boosting business administration and information technology programs are the most popular, but you’ll also find a variety of literal arts offerings, from film theory to medieval history and foreign lang uage study. While you still can’t get an Ivy League degree on line, a growing number of elite(卓越的) institutions, including Stanford and New York Univer sity are beginning to offer on line courses. The benefits for busy people are obvious. “I always get a front row seat,” says one student studying at the State University of New York Learning Network. “I can get up in the middle of class, grab a cup of coffee. The class is waiting for me when I get back, and I haven’t missed a thing.” On the other hand, some students miss the face to face interaction that often sparks interest and involvement. Generally speaking, on line education costs ____.
A.more than the traditional one
B.less than the traditional one
C.as much as the traditional one
D.the author hasn’t mentioned
第2题
Passage One
At Benjamin N. Cardozo High School in Queens, he was known as Matthew Kaye, an earnest social studies teacher shepherding his ninth-and tenth-grade students across the panorama of global history. But out of school-on the professional wrestling circuit- he was Matt Striker, a muscleman known for a move called the lung blower.
His double life may have body-slammed ins teaching career.
According to city investigators, Mr. Kaye, 31, falsely called in sick for 11 days in December and February when he was actually on the wrestling tour. Faced with disciplinary action, Mr. Kaye resigned in April, but yesterday be said that he hoped to get ins job back
"There are people out there who touch children inappropriately who are still allowed to work, "Mr. Kaye said in a telephone interview. "The only thing I did was I put in sick days instead of personal days, because I didn't know them was a difference."
But Richard J. Condon, the special commissioner of investigation for the city schools, said it was not that simple. Teachers get 10 sick days a year and only 3 of those can he used for personal business.
Investigators from Mr. Condon's office said a woman who identified herself as Mr. Kaye's mother called Cardozo in December and said that he was out because of a family emergency. Mr. Kaye later told an assistant principal at the school flat his sister was ill.
Then Mr. Kaye was absent in February, when wrestling Web sites said that he appeared on die television show "Smack Down!" in a match against Kurt Angle.
Investigators sought to interview Mr. Kaye, but his lawyer canceled the session and Mr. Kaye resigned.
Mr. Kaye eventually provided two notes from doctors for his absences. But investigators questioned their validity and urged the State Health Department's Office of Professional Medical Conduct to investigate and take action.
Passage Two
The evidence of dietary protection against cancer is strongest and most consistent for diets high in vegetables and fruits, according to an earlier report by the World Cancer Research Fund (WCRF).
The WCRF panel of experts concluded that the daily consumption of 400 grains or more of a variety of vegetables and fruits could, irrespective of other diet and lifestyle. patterns, decrease overall cancer incidence by at least 20 per cent, according to the Asia Food Information Centre.
There is convincing evidence that diets high in vegetables and fruits protect against cancers of the mouth and pharynx, oesophagus, lung, stomach, rectum, larynx, pancreas, breast and bladder. High dietary fiber is also associated with lower risk of some cancers, especially bowel cancer.
The recommended daily intake of dietary fiber is 25-30 grams for a healthy adult. This can only be achieved by incorporating high fiber foods such as whole grains, vegetables, fruit, nuts and seeds into eating patterns every day and/or using a bran supplement.
Adequate fruit and vegetable intake has a protective effect, helping ward off chronic diseases while helping to elevate resistance to infections disease and reduce nutritional deficiencies. Fruit and vegetables actively promote health by providing bodies with essential vitamins, nutrients, fiber and a myriad of phytochemicals (植物化学物质) which acts as antioxidants (抗氧化剂 in the body. Antioxidants neutralize the free radicals that accelerate the process of cell decay and increase the chances of cells becoming cancerous.
Four hundred grams of fruits and vegetables per person per day (excluding potatoes and other starchy tubers) for the prevention of chronic diseases translates to approximately "5-a-day" that is, eating five or more servings of fruit and vegetables every day.
One serving is roughly the amount that fits into the pa
A．Y
B．N
C．NG
