Question

【題目】

In 1997, a spaceship called Cassini was sent to explore Saturn (土星) and its moons. Now Cassini’s mission (使命) has come to an end. Scientists made it fall and bum up in 2017. But before that happened, the spaceship had made many trips between Saturn and its rings, sending photos and other information back to the Earth.

Cassini was a project carried out by NASA, the European Space Agency and the Italian Space Agency. It took Cassini about seven years to reach Saturn.

Scientists have learned many exciting things from Cassini. In 2005, Cassini sent a space probe (探測器) to Saturn’s largest moon, Titan, so scientists could get a closer look at the moon’s surface. One of the most important discoveries Cassini made was that there is warm liquid water (液態(tài)水) under the ice that covers one of Saturn’s smaller moons, Enceladus. Scientists believe conditions on Enceladus could be similar to the conditions that led to the development of life on Earth.

Cassini’s mission was supposed to be ended in 2008, but because it was still in good shape, scientists increased its life to 2017. Cassini performed the last task of its mission on September 15, 2017.

When Cassini ran out of its fuel (燃料) and entered Saturn’s atmosphere (大氣層), it burned up. Scientists said it was necessary for Cassini to be totally destroyed (毀壞) so there was no chance that microbes (微生物) from the Earth could be harmful to any possible life on Saturn.

【1】What made scientists think that there might be life on Enceladus?

A. Animals’ waste was found.

B. They heard strange sounds.

C. Some ice was seen to cover it.

D. There is warm liquid water on it.

【2】What might happen if Cassini wasn’t totally destroyed?

A. It might destroy Saturn’s surface.

B. It will fall onto the Earth.

C. The microbes from the Earth might be bad for Saturn’s possible life.

D. It will continue to send back information.

【3】Which of the following things about Cassini is NOT mentioned?

A. Its findings. B. Its lasting time.

C. Its burning. D. Its later use.

【4】What can be inferred from the passage?

A. Cassini was a very successful and useful spaceship.

B. Cassini has stayed in Saturn for ten years.

C. The project of exploring Saturn was carried out by America alone.

D. Enceladus is the biggest moon of Saturn.

【5】What is the passage mainly about?

A. The process (過程) of sending Cassini to Saturn.

B. The moons and rings of Saturn.

C. The end of Cassini’s mission.

D. The life on Saturn.

Answer 1

【答案】

【1】 D

【2】 C

【3】 D

【4】 A

【5】 C

【解析】

短文大意：本文是一篇科普文，介紹了卡西尼號飛船從1998開始用了7年時間到達(dá)火星，對火星上是否存在生命進(jìn)行探測，發(fā)現(xiàn)Enceladus上的環(huán)境可能與導(dǎo)致地球上生命發(fā)展的環(huán)境相似，2017年9月15日它完成了最后一項任務(wù)。

【1】題意：是什么讓科學(xué)家們認(rèn)為Enceladus上可能有生命?考查細(xì)節(jié)理解題。根據(jù)One of the most important discoveries Cassini made was that there is warm liquid water (液態(tài)水) under the ice that covers one of Saturn’s smaller moons, Enceladus. “卡西尼”號最重要的發(fā)現(xiàn)之一是，在土星較小的衛(wèi)星Enceladus的冰層下存在著溫暖的液態(tài)水，可知選D。

【2】題意：如果卡西尼號（Cassini）沒有被完全摧毀會發(fā)生什么?考查細(xì)節(jié)推斷題。根據(jù)科學(xué)家的解釋Scientists said it was necessary for Cassini to be totally destroyed so there was no chance that microbes from the Earth could be harmful to any possible life on Saturn. “卡西尼”號必須被完全摧毀，這樣一來，來自地球的微生物就不可能對土星上的任何生命造成傷害，可知來自地球的微生物可能對土星上可能存在的生命造成傷害，故選C。

【3】題意：關(guān)于卡西尼，下列哪一件事沒有提到?考查細(xì)節(jié)理解題。A. Its findings. 調(diào)查結(jié)果。B. Its lasting time.持續(xù)時間。C. Its burning. 它的燃燒。D. Its later use.它的后續(xù)使用。根據(jù)短文內(nèi)容，對于卡西尼號被摧毀后的處理沒有提到，可知選D。

【4】題意：從文章中可以推斷出什么?考查細(xì)節(jié)推斷題。A. Cassini was a very successful and useful spaceship. 卡西尼號是一艘非常成功和有用的飛船；根據(jù)Scientists have learned many exciting things from Cassini.結(jié)合短文內(nèi)容，可知說法正確。B. Cassini has stayed in Saturn for ten years.卡西尼號已經(jīng)在土星停留了十年；根據(jù)In 1997, a spaceship called Cassini was sent to explore Saturn (土星) and its moons. 和Cassini performed the last task of its mission on September 15, 2017.，可知說法錯誤。C. The project of exploring Saturn was carried out by America alone. 探測土星的計劃是由美國獨自執(zhí)行的；根據(jù)Cassini was a project carried out by NASA, the European Space Agency and the Italian Space Agency.，可知說法錯誤。D. Enceladus is the biggest moon of Saturn. Enceladus是土星最大的衛(wèi)星；根據(jù)One of the most important discoveries Cassini made was that there is warm liquid water under the ice that covers one of Saturn’s smaller moons, Enceladus.，可知說法錯誤。綜合以上分析，故選A。

【5】題意：這篇文章主要講的是什么?考查主旨理解題。根據(jù)短文內(nèi)容，介紹的是卡西尼號飛船對火星生命的探測，結(jié)合Now Cassini’s mission (使命) has come to an end. Scientists made it fall and bum up in 2017.，可知選C。