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What is the main goal of sending human missions to Mars？
A．To find out if life ever existed there.
B．To see if humans could survive there.
C．To prove the feasibility of large-scale space ventures.
D．To show the leading role of science in space exploration.
答案
更多“What is the main goal of sending human missions to Mars？A．To find out if life ever existed”相关的问题
第1题
What does the author say about people believing in fixed ability？
A．They don't focus on goals that improve themselves.
B．They are more willing to commit to long-term goals.
C．They can't take on many challenging tasks at one time.
D．Their goals are to get better instead of being good.
第3题
What is the main topic of the passage？
A．Management skills.
B．Performance evaluation.
C．How to make the employees more productive.
D．How to find incompetent employees.
第4题
The main purpose of the second paragraph is to ______.
A．tell what is talent
B．explain that intelligent children are creative.
C．differentiate between creativity and intelligence.
D．show that creative children are usually intelligent.
第5题
What's the main idea of this passage？
A．World population and food shortage.
B．World population and climate change.
C．Desert plants and gene technology.
D．Food and fuel shortage in the future.
第6题
What is the main difference between an electronic book and a LCD screen？
A．The power they need.
B．The portability they come to.
C．The convenience they make.
D．The content they store.
第7题
What is the main difference between an electronic book and a LCD screen？
A．Electronic ink.
B．The portability they come to.
C．The convenience they make.
D．The content they store.
第9题
What is the author's main concern？
A．How to render automobiles pollution-free.
B．How to make smaller and safer automobiles.
C．How to solve the problem of traffic jams.
D．How to develop an automated subway system.
第10题
What is the main idea of this passage？
A．The difference between the primary school and the secondary school.
B．The method that pupils get help from the teachers.
C．The personal development of the pupils in the secondary school.
D．The function of the secondary school.
