Question

The year is 2094.It has been announced that a comet(彗星) is heading towards the Earth. Most of it will miss our planet, but two pieces will probably__1__the southern half of the Earth.

__2__17 July, a piece four kilometers wide enters the Earth's __3__ with a massive explosion. About half of the piece is destroyed, but the __4__  part hits the South Atlantic at 200 times the speed of __5__. The sea __6__ and a huge hole is made in the sea bed.Huge waves are created and spread out from the hole. The wall of water, a kilometer high, rushes towards southern Africa at 800 kilometers an hour. Cities on the African are totally destroyed and millions of people are__7__.

Before the waves reach South America, the second piece of the comet __8___ in Argentina.Earthquakes and volcanoes are__9__ off in the Andes Mountains. The shock __10__move north into California and all around the Pacific Ocean. The cities of Los Angeles, San Francisco and Tokyo are completely __11__by earthquakes. Millions of people in the __12__ half of the earth are already dead, __13__  the north won't be safe for long. Because of the explosions, the sun is __14__  by clouds of dust, temperatures around the world falls to almost zero. Crops are ruined.The sun won't be seen again for many years. Wars __15__ as countries fight for __16__.A year later, no more than 10 million people remain __17__.

Could it really __18__？ In fact, it has already more than once in the history of the Earth. Science shows that the dinosaurs(恐龍)__19__on the Earth for over 160 million years. Then 65 million years ago they suddenly disappeared.Many scientists believe that the Earth was hit by a piece of heavenly object. The dinosaurs couldn't live __20__ the cold climate that followed and they died out. Will we meet the same end?

1．A.attack  　　　B．hit　　　　C．beat　　　　 D．damage

2．A.On          B．In         C．At          D．During

3．A.air          B．environment  C．situation    D．a(chǎn)tmosphere

4．A.rest         B．other       C．remaining    D．half

5．A.sound          B．light          C．earth               D．a(chǎn)ir

6．A.burns           B．destroys        C．harms            D．boils

7．A.dead             B．lost              C．killed               D．damaged

8．A.enters          B．comes          C．flies               D．lands

9．A.sent              B．set              C．caused                 D．made

10．A.rocks          B．waves         C．earth             D．shakes

11．A.damaged     B．changed      C．ruined      D．injured

12．A.southern    B．northern     C．western      D．eastern

13．A.and        B．besides      C．but         D．so

14．A.colored     B．hidden     C．polluted       D．shut

15．A.come out    B．erupt     C．take place     D．break out

16．A.water     B．money      C．food        D．the earth

17．A.dead     B．injured      C．a(chǎn)ctive       D．on the earth

18．A.be true           B．happen

C．hit the earth      D．destroy the world

19．A.have been  B．had been  C．were      D．would be

20．A.for        B．through   C．with      D．on

Answer 1

1.解析：選B。彗星應(yīng)該是“擊中”地球，所以應(yīng)該是hit。 beat意為反復(fù)的 “擊打”。

2．解析：選A。有具體日期的時間短語前要用on。

3．解析：選D。彗星碎塊進入“大氣層”。所以應(yīng)該是atmosphere。

4．解析：選D。該塊彗星石的大部分已經(jīng)燃燒，剩下的部分和地球相撞。rest不能作定語。只能說the rest of sth.。

5．解析：選A。以兩百倍聲速才符合科學(xué)常識。

6．解析：選D。大海沸騰起來，而不是燃燒起來。harm和destroy詞義不符題意，另外也不能作不及物動詞。

7．解析：選C。好幾百萬人丟了命。dead表示死亡狀態(tài)；sb. be lost表示迷路。

8．解析：選D。另一塊彗星降落在阿根廷境內(nèi)。

9．解析：選B。句意為：火山和地震被引發(fā)。set sth. off引發(fā)某物劇烈發(fā)生。

10．解析：選B。shock waves沖擊波，符合語境。

11．解析：選C。由文意可知，這兩座城市完全被毀滅。

12．解析：選A。第一段最后一句提示了該兩塊彗星會擊中南半球。

13．解析：選A。這前后兩句應(yīng)該為遞進關(guān)系。

14．解析：選B。句意為：太陽被云層遮蓋。

15．解析：選D。戰(zhàn)爭爆發(fā)應(yīng)該用break out。

16．解析：選C。前句說“Crops are ruined”，所以國與國會為爭奪糧食而戰(zhàn)。

17．解析：選D。句意為：一年后地球上僅僅存留著一千萬人。

18．解析：選B。此句意為“這種事情真的會發(fā)生嗎”，而非“這種事情可能是事實嗎”；因為it指這種事情，而不是該彗星，所以C、D兩項都不對。

19．解析：選C。此句應(yīng)為“恐龍曾經(jīng)在地球上生活過1.6億年”，并沒有延續(xù)到現(xiàn)在，所以不能為現(xiàn)在完成時態(tài)；另外，shows是現(xiàn)在時態(tài)，所以答案也不能是過去完成時態(tài)。

20．解析：選B�？铸埐荒堋岸冗^這樣的氣候”。