28.Why does the author mention EAHSW's survey in the first paragraph?
A.To make a comparison.
B.To introduce the topic.
C.To provide an example.
D.To make the text persuasive.
29.What does Paragraph 3 mainly tell us about the Ironhand?
A.How it functions.
B.How it is designed.
C.What it consists of.
D.Why it is developed.
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