The writer thinks that modem explorers______.
A. may be lonely
B. can not conquer their fears
C. will keep in touch with the earth
D. can not have connection with the earth
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According to the passage, what causes Parkinson's disease？
A. The dopaminergic nerve cells are impaired by the victim cells.
B. The dopaminergic nerve cells can no longer coordinate movement.
C. There are tumors in the brain.
D. There are not enough dopaminergic neurons in the brain.
【C1】
A. and so
B. or so
C. on so
D. so on
【C2】
A. increased
B. got
C. reduced
D. reached
Some readers, especially children, find his works among the most______books they have ever
A. captivating
B. captivated
C. capturable
D. captious
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