单项选择题

Scorpions injected with prostaglandins move to hot areas to ______.

A．engage in greater activity
B．seek out a more iron environment
C．demonstrate that they are ill
D．develop a fever and fight bacterial infections
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单项选择题
Fevers cause______.
A．prostaglandins to be formed
B．iron to be made available to bacteria
C．leukocytes to be more mobile
D．lizards to be cold-blooded animals
单项选择题
Which of the following statements is true
A．Developing fever is the privilege of warm-blooded animals, so sick lizards can not run a fever.
B．Invertebrates also have the ability to raise their temperature.
C．The internal temperatures of warm-blooded creatures are independent of the weather, so are the cold-blooded animals.
D．Sick lizards move into the sun to develop fever.
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