单项选择题

Some (animals) have been (regardless) by nearly all societies as a (valuable) economic (resources).（）

A．animals
B．regardless
C．valuable
D．resources

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单项选择题

(Alike) light (waves), microwaves (may be) reflected and (concentrated).（）

A．Alike
B．waves
C．may be
D．concentrated

单项选择题

I'd rather （） care of the stomaches of the living than the glory of the dead in the form of stone memorials.

A．take
B．took
C．taking
D．have taken

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