The word “mania” （Line 4， Paragraph 2） most probably means A． fun. B．craze. C．hysteria. D．excitement.

Choose the correct expressions to complete the sentences.It's a weird fashion craze, which has _______ the country. A: spread around B: spread under

A(n) ( ) is a disease that spreads rapidly among many people in a community at the same time. A: craze B: panorama C: epidemic D: fad

What does the passage say about classical guitar（）. A: It is not popular with the public. B: It is not an easy skill to master. C: It is a favorite of many young people. D: It is a craze in some countries like Spain.

How did rock music influence American culture? A: Defining young people in their struggle to differentiate themself from their parents. B: Many dance craze are still common today started out as people dancing to rock music. C: All the other three choices D: Symbol of rock, like black leather jackets and studded boots is seen as cool and fashionable.

Whichtwowordsareclosestinmeaning?<br/><b>cycle</b><b>，</b><b>hawk</b><b>，</b><b>convey</b><b>，</b><b>extort</b><b>，</b><b>peddle</b><b>，</b><b>summon</b>

设A{a,b}，则P(A)×A = (   )。 A: A B: P（A） C: {<Φ,a>,<Φ,b>,<{a},a>,<{a},b>,<{b},a>,<{b},b>,<A,a>,<A,b>} D: {<a,,Φ,>,<b,,Φ,>,<a,{a}>,<b,{a}>,<a,{b}>,<b,{b}>,<a,A>,<b,A>}

以下哪段代码可以将A,B的值互换（） A: A=A^B; B=A^B;A=A^B B: A= A^B;A=A^B;B=A^B C: B= A^B; B=A^B; A=A^B D: B=A^B; A= A^B; A= A^B

若集合A={a，b}，B={ a，b，{ a，b }}，则（）。 A: A⊆B，且A∈B B: A∈B，且B⊆A C: A⊈B，且A∉B D: A∉B，且A⊈B

设论域D={a,b}，与公式[img=504x85]17d6234b6469e12.png[/img]等价的命题公式是（ ） A: (A（a）∧A（b）) → (B（a）∧B（b）) B: (A（a）→B（a）)∨(A（b）→B（b）) C: (A（a）∨A（b）) → (B（a）∨B（b）) D: (A（a）→B（a）)∧(A（b）→B（b）)