1 In the past half-century, average incomes ___ quickly in developed countries, yet happiness levels have remained almost the same.A.have risenB.had risenC.roseD.rise 2 In the past half-century, average incomes ___ quickly in developed countries, yet happiness levels have remained almost...
V, 短文改错Over the past half century. it has become very common for farmers to use chemical fertilizers in farming. It's a great way to stop crop disease and in-crease produce. Recently, however, scientists have been found that long-term use of these fertilizers can cause damage to the...
精英家教网>高中英语>题目详情 12.Over the past half century,using chemical fertilizers have become very common in farming.have→has. 试题答案 在线课程 分析在过去的半个世纪,在农业上使用化学肥料已经很普遍了. 解答答案:have→has 根据句意,主语为"using chemical fertilizers"这是一个动名词做主语,谓语需...
1.a period of 50 years:during the past half-century. 2. a.a score or grouping of 50:a half-century of points. b.(as modifier):as I near the half-century mark. Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000...
over the past half century阅读理解 【题目】: Over the past half-century, North America has lost more than a quarter of its entire bird population, or around 3 billion birds. “We saw this great net loss across the entire bird community,” says Ken Rosenberg, a scientist in Ithaca, N.Y...
通读全文,根据第一段“Over the past half-century, scientists have settled on two reasonable theories related to baby talk. One states that a young child’s brain needs time to master language. The second theory states that a child’s vocabulary level is the key factor.”( 在过去的半个世纪...
语法填空Over the past half century, it has become very common for farmers to use chemical fertilizers in farming. It's a great way to stop crop disease and increase 1 (produce). Recently, however, scientists 2(find) that long-term use of these fertilizers can cause damage to the land an...
19.Over the past half century,usingchemical (化学) fertilizers has become very common in farming. 试题答案 在线课程 分析 在过去的半个世纪里,使用化肥已经成为农耕非常普遍的事情了. 解答 答案:chemical.本空修饰后面的名词fertilizers,可知前面使用形容词chemical来修饰;故答案为chemical. 点评 本题需要结合句...
Over the past half-century, North America has lost more than a quarter of its entire bird population, or around 3 billion birds."We saw this great net loss across the entire bird community," says Ken Rosenberg, a scientist in Ithaca, N.Y. "But we also knew that other bird populations...
Over the past half-century, scientists have settled on two reasonable theories related to baby talk. One states that a young child's brain needs time to master language. The second theory states that a child's vocabulary level is the key factor. According to this theory, some key steps hav...