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单项选择题

What does "brainchild" in the paragrapth 4 mean

A．Patent.
B．Invention.
C．Hope.
D．Pride.

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单项选择题What can be inferred from the passage

A．Most scientists are confident that the spacecraft will work well.
B．A more ambitious orbital flight will follow this mission.
C．The author is quite sure that this mission will make impossible technologies seem possible.
D．The key of the engineering of Cosmos I is building wings that can open and pivot.

单项选择题What is the energy source of this so-called solar-sail vehicle

A．Sunlight.
B．Nuclear.
C．Wind.
D．Electricity.

单项选择题What was Thompson’s first reaction to the scene ahead

A．He remained in the saddle for several minutes spellbound.
B．He immediately jumped down and went forward.
C．He waited until his bed was ready and then dismounted.
D．He rode to the mound and stared at the structure before him.

单项选择题Thompson believed that man is instinctively a sun-worshipper because ______.

A．the worship of the sun-god had clearly been the function of the temple
B．all living things celebrate the sunrise
C．the sunrise is the most magnificent of all phenomena
D．It is natural for man to worship the sun and he has always done so

单项选择题The territory which Thompson was exploring ______.

A．had been abandoned by the Mayas about thirteen hundred years previously
B．had been occupied and developed by the Mayas about thirteen hundred years before
C．had been deserted by the Mayas as soon as the Spaniards arrived
D．was conquered by the Mayas thirteen hundred years ago