单项选择题

Which of the following is not true

A．When they grow up, insects look the same as when they are young.
B．Insects keep changing during their growth.
C．Insects have different shapes.
D．Not all insects look the sam

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热门试题

单项选择题

What is the important insight recently gained in the study of E1 Nino

A．E1 Ninos are usually accompanied by warm currents.
B．E1 Ninos are destructive.
C．La Ninas come between E1 Ninos.
D．La Ninas are less destructive than E1 Ninos.

单项选择题

Which of the following areas have been affected by E1 Ninos

A．Southern Africa and Australia.
B．North America and Asia.
C．South America and North America.
D．All the areas mentioned abov