Della, M Ray Jr
11 In 1850 ,about a third of USA ___ covered by forests.A were B has been C was12 Most of our earth ___coveresd by water.A are B is C was D were13 ___going to England by air next week.A The Green family are B The Greens family areC The Green...
“population”表示“人口”并单独作主语时，谓语动词一般只用单数不用复数。“population” 前面出现分数，百分数或不定代词most，half 等时，谓语动词用单数或复数均可，而单数更常见些。population做主语的时候谓语动词用单数还是复数 The population of the earth is increasing very fast.其中population作...
250,000mouths more in one day.If the world's populationgoes on growing like this,things will turn for theworse.()4.During the years from 1850 to 1950,thepopulation of the US increased byA.three timesB.five timesC.six timesD.seven times()5.What was the population of the world in1968...
阅读理解 阅读理解 The crowding of large groups of people in the cities has caused many of the world’s population problems. Supply for the needs of the people leads to further pollution by industry. If the
Between 1850 and 1950, more than thirty million people went from Europe to live in the U.S.A., but the populations of North and South America together. 2.“population” 前面出现分数,百分数或不定代词most,half 等时,谓语动词用单数或复数均可,而单数更常见些。如: ...
Some scientists speak of the increase in numbers of people as "population pollution". About 2000 years ago, the world population was probably about 250 million; it reached a billion in 1850. By 1930 the population was two billion. It is now three and a half billion. It is expected to ...
Some scientists speak of the increase in numbers of people as "population pollution". About 2000 years ago, the world population was probably about 250 million; it reached a billion in 1850. By 1930 the population was two billion. It is now three and a half billion. It is expected to ...
Many of the world’s pollution problems have been caused by the crowding of large groups of people into the cities. Supply for the needs of the people leads to further pollution by industry. If the rapid increase of world population in countries continues at the present rate there may be mu...
Some scientists speak of the increase in the number of people as“population pollution”.About 2,000 years ago, the world's population was probably about 250 million. It reached a billion in 1850. By1930, the population was two billion. It is now seven billion. If the population continues...