单项选择题

The Viking I exploration accomplished all of the following EXCEPT

A．monitoring weather conditions
B．performing scientific experiments
C．collecting information showing volcanic action
D．discovering large quantities of polar ice and permafrost

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单项选择题

Which of the following statements is INCORRECT

A．Computertowns in the UK have become popular.
B．Computertowns and clubs cater for different people.
C．Computertowns are more successful than clubs.
D．It's better that Computertowns and clubs work together.

单项选择题

Mars has been nicknamed ______.

A．Viking I
B．Deimos
C．the Red Planet
D．Martian