Some heartening statistics were reported last year by the Journal of the National Cancer Institute: the mortality rate for breast cancer dropped nearly five percent between 1989 and 1992, the Largest decline since 1950. The numbers were even more dramatic for young women: between 1987 and 1992, the mortality rate plummeted nearly 18 percent among white women younger than 40.
But discouraging news also surfaced: the mortality rate among black women has gone up, and the number of reported breast cancer cases is rising as well. Twenty years ago a woman’s lifetime risk of breast cancer was one in 12; now it’s one in eight.
Nevertheless, we’re on the verge of a revolution in treating this disease. Researchers now have a clear picture of how a cancer cell becomes a tumor -- and how cells break free from a tumor and glide through the bloodstream to seed a new one in another part of the body. And they better understand how the female hormone estrogen mak
A. The mortality rate for breast cancer dropped.
B. The mortality rate among black women has increased.
C. The number of reported breast cancer cases is rising.
D. A woman’s lifetime risk of breast cancer is rising.
Some people were just born to rebel;Charles Darwin was one of them. 21 Nicholas Copernicus,Benjamin Franklin and Bill Gates.They were 22 “laterborns”-that is,they had 23 one older sibling-brother or sister-when they were born.
24 ,laterborns are up to 15 times more likely than firstborns to 25 authority and break new 26 ,says Frank J.Sulloway,a researcher scholar at the Massachusetts Institute of Technology.
In his book“ Born To Rebel” being 27 this week,Sulloway claims that 28 someone is an older or younger sibling is the most important 29 shaping personality more significant than gender,race,nationality 30 class.
He spent 26 years 31 the lives-and birth orders-of 6,566 historical 32 to reach his conclusions.
A laterborn himself,Sulloway first 33 how birth order affected personality 34 a scholar of Darwin at Harvard University.
A. questionable
B. indifferent
C. traditional
D. revolutionary
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