题目列表(包括答案和解析)
选词填空
keep off防止，挡住 keep on继续干 keep up with赶上，不落在后面
keep(sth．/sb．)out不使…进入 keep in touch with和…保持联系
keep one’s word守信，遵守诺言
(1)You should study hard if you want to ________ others．
(2)We had to think of a way to ________ the rain．
(3)It was raining, but they ________ till the work was finished．
(4)The Chinese people always ________
(5)The rain ________ for several days．
(6)We have ________ each other after graduation．
(7)Don’t ________ me ________ in the cold．Let me in
III. 完形填空：
Many of the world's pollution problems have been 1 by the crowding of large groups of people into cities．Supply for the 2 of the people leads to 3 pollution by industry．If the 4 increase in human population 5 at the present rate（比率），there may be much greater harm． Some scientists speak of the 6 in number of people as“population pollution．”
About 2000 years ago，the world 7 was probably about 250 million． 8 reached a billion in 1850．By 1930the population was two billion．It is 9 six and a half billion．It is 10 to double by the year 2050．If the population continues to grow at the same 11 ， there would be 25 billion people in the world a hundred years from now．
Man has been using the earth's 12 more and more rapidly over the years．Some of them are almost 13 ．Now many people believe that man's greatest 14 is how to control the growth of his population．The 15 in the world will not support the human population，in time to come，if the 16 rate of increase continues． 17 there is over crowding in the 18 and hunger in some countries． Can man's rate of increase 19 ？Many people believe that human survival（继续生存）in the future depends on the answer 20 the question．
1．A．made B．caused C．led D．worked out
2．A．needs B．satisfies C．service D．lacks
3．A．farther B．less C．further D．better
4．A．harmful B．small C．slow D．rapid
5．A．stops B．continues C．slows down D．adds to
6．A．increase B．reduce C．quality D．quantity
7．A．people B．situation C．population D．land
8．A．They B．You C．We D．It
9．A．now B．in the past C．in the future D．then
10．A．hoped B．expected C．wished D．looked forward to
11．A．time B．year C．rate D．period
12．A．place B．oil C．mines D．resources
13．A．missed B．rich C．gone D．enough
14．A．problem B．power C．plan D．idea
15．A．food B．electricity C．energy D．materials
16．A．past B．present C．future D．slow
17．A．Already B．Yet C．Still D．Often
18．A．villages B．mountains C．cities D．farms
19．A．continue B．exist C．fall D．keep
20．A．in B．of C．to D．for
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com