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[单选题]

Mars is the _____ planet from the Sun.

A.third

B.fourth

C.sixth

D.eighth

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更多“Mars is the _____ planet from the Sun.”相关的问题

第1题

The passage is mainly concerned with ______.A.the feasibility of life existing on other pl

The passage is mainly concerned with ______.

A.the feasibility of life existing on other planets

B.the description of Mars's physical environment

C.the comparison between the physical features of Mars and the Earth

D.the feasibility of men's migrating onto Mars

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第2题

May there be life on Mars?
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第3题

Which is the best title for this passage?

A.The Possibility of Life on the Mars

B.Future Conditions on the Mars

C.The Mars and the Earth

D.A Study of the Climate of the Mars

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第4题

简述MARS的原理。

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第5题

Which is the best title for this passage? A.The Possibility of Life on the Mars B.Future
Conditions on the Mars C.The Mars and the Earth D.A Study of the Climate of the Mars

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第6题

A.Scientists from "Mars Underground" want to stay on Mars for a lifetime.B.Scientists

A.Scientists from "Mars Underground" want to stay on Mars for a lifetime.

B.Scientists from "Mars Underground" have been paying attention to the manned missions that we have been sending to Mars.

C.Even if there is any life on Mars, it is not an intelligent one.

D.We will send astronauts to Mars within ten years.

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第7题

Why is the second theory sometimes referred to as the Mars Theory?

A.Earth's moon used to orbit Mars.

B.Mars was captured by the gravitational field of the Sun,

C.A planet the size of Mars collided with Earth.

D.Mars is larger than Earth.

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第8题

The author of this passage is mainly concerned with______.A.the significance of discovery

The author of this passage is mainly concerned with______.

A.the significance of discovery of water on the Mars

B.the achievements of U.S. in exploring the Mars

C.the performance of five craft launched to Mars

D.the fate of the science of Mars exploration

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第9题

According to the passage, what has been a major focus of research about Mars?A.How Mars co

According to the passage, what has been a major focus of research about Mars?

A.How Mars compares to other planets in the solar system

B.Who built the network of canals on the surface of Mars

C.Whether signs of water indicate that life has existed on Mars

D.How soon astronauts from Earth will be able to go to Mars

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第10题

Aiming to retrieve the Mars rover Opportunity, engineers are imitating Mars surface condit
ions in a testing laboratory.

A.copying

B.mocking

C.simulating

D.pretending

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