1. A “calendar stick” carved centuries ago by the Winnebago tribe may provide the first evidence that the North American Indians developed advanced full-year calendars based on systematic astronomical observation. 2.A 1972 agreement between Canada and the United States reduced the amount of phosphates that municipalities had been allowed to dump into the Great Lakes. 3.
A collection of 38 poems by Phillis Wheatley, a slave, was published in the 1770’s, the first book by a Black woman and only the second published by an American woman 4. A common disability in test pilots is hearing impairment, a consequence of sitting too close to large jet engines for long periods of time.
5 A controversial figure throughout most of his public life, the Black leader Marcus Garvey advocated that some Blacks return to Africa, the land that, to him, symbolized the possibility of freedom.
6. A fire in an enclosed space burns with the aid of reflected radiation that preheats the fuel, making ignition much easier and causing flames to spread more quickly. 7. A firm that specializes in the analysis of handwriting claims to be able, from a one-page writing sample, to assess more than three hundred personality traits, including enthusiasm, imagination, and ambition. 8. A huge flying reptile that died out with the dinosaurs some 65 million years ago, the Quetzalcoatlus had a wingspan of 36 feet, and it is believed to have been the largest flying creature the world has ever seen. 9. A Labor Department study states that the number of women employed outside the home increased by more than thirty-five percent in the past decade and accounted for more than sixty-two percent of the total growth in the civilian work force. 10
A large rise in the number of housing starts in the coming year should boost new construction dollars by several billion dollars, making the construction industry’s economic health much more robust than it was five years ago
下载回复可见 本帖隐藏的内容需要回复才可以浏览 |