【題目】根據(jù)短文選擇正確答案填空。
The population problem may be the 1 one of the world today. The world's population is growing 2. Two thousand years ago, there were only 250 million people 3 the earth. Four hundred years ago, the number was4 500 million. But at the beginning of the 5 century, the world's population was about 1,700 million. In 1970, this number was 3,600 million. In 1990, the number was five billion.
A 6 report said that the world's population 7 six billion by the end of the 20th century. This is just ten 8 after it 9 five billion. The UN estimated(估計(jì))the world's population will grow by more than 10 by the year 2050.
(1)A.great B.greater C.greatest D.greating
(2)A.faster and faster B.fast and fast C.fastest and fastest D.faster and fast
(3)A.in B.on C.at D.for
(4)A.near B.more C.almost D.over
(5)A.twenty B.twelve C.twentieth D.twelfth
(6)A.USA B.UN C.PRC D.PLA
(7)A.past B.had passed C.passed D.passes
(8)A.weeks B.months C.seasons D.years
(9)A.get B.gets C.reached D.reach
(10)A.a three B.ne thirds C.one of three D.a third

【答案】(1)、C
(2)、A
(3)、B
(4)、D
(5)、C
(6)、B
(7)、B
(8)、D
(9)、C
(10)、D

【解析】⑴句意:人口問題也許是當(dāng)今世界最大的問題?崭袂坝衪he,故用最高級(jí)。所以選C。
⑵句意:世界人口增長的越來越快。比較級(jí)+and+比較級(jí),越來越……,故選A。
⑶句意:2000年前地球上只有2億5千萬人口。on the earth在地球上,故選B。
⑷句意:400年前,人口數(shù)是超過5億。near在附近;more更多;almost將近,幾乎;over超過。根據(jù)句意可知D正確。
⑸句意:但是在20世紀(jì)初,世界人口大約是17億。twenty的序數(shù)詞twentieth。故選C。
⑹句意:一份聯(lián)合國的報(bào)告說世界的人口到20世紀(jì)末已經(jīng)超過了60億。A美國;B聯(lián)合國;C中華人民共和國;D中國人民解放軍。根據(jù)下文可知是聯(lián)合國,故選B。
⑺句意:一份聯(lián)合國的報(bào)告說世界的人口到20世紀(jì)末已經(jīng)超過了60億。by the end of到……末,用完成時(shí)態(tài),故選B。
⑻句意:這只是達(dá)到50億后過了10年。根據(jù)句意可知選D。
⑼達(dá)到50億是在1990年,所以用一般過去時(shí),故選C。
⑽句意:聯(lián)合國預(yù)計(jì)到2050年世界人口將增長三分之一。分?jǐn)?shù)的構(gòu)成:分子基數(shù)詞,分母序數(shù)詞,分子大于一,分母加-s。故選D。

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