单项选择题

A title that would best express the main idea of the passage would be ______.

A．Secrets of Spiders
B．Secrets of the Spider Web
C．Secrets of Nature
D．A New Discovery of Scientists
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单项选择题
A spider conserves its energy ______.
A．because it constructs new webs daily
B．as it walks over the strands it lays
C．by eating its own web protein and then re-using it in the new web
D．by eating only in the evening
单项选择题
It is futile to discuss the matter further, because ______ going to agree upon anything today.
A．neither you nor I are
B．neither you nor me is
C．neither you nor I am
D．neither me nor you are
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