4.在中,,则是 ( C )
A.正三角形 B.锐角三角形 C.直角三角形 D.钝角三角形
3.在等差数列中,若,则的值为( C )
A.14 B.15 C.16 D.17
2.已知a是非0实数,则“a>1”是“”的 ( A )
A.充分不必要条件 B.必要不充分条件 C.充要条件 D.既不充分也不必要条件
1.不等式的解集是 ( D )
A.(-1,3) B.(-3,1)(3,7)
C.(-7,-3) D.(-7,-3)(-1,3)
25.The book didn’t children probably because the author employed too many scientific terms in it.
A.apply to B.appeal to C.intend to D.lead to
答案 C
24.For the moment notice was of nuclear talks between Iran and some western countries.
A.paid B.taken tered D.given
答案 B`
23.Newadays many teenayers want to from their parents and live a life being controued.
A.break away;free from B.break up;free of
C.break off;opposed to D.break down;instead of
答案 A
22. When I was in kindergarten,I was often by my teachers to be polite to the adults.
A.demanded B.reminded C.allowed D.hoped
答案 B
21.The film star is content with herself,and she always likes to her nice figure by wearing
tight dresses in public.
A.get off B.show off C.put off D.turn off
答案 B
20.They are still the missing child,who disappeared last Sunday after attending her friend’s birthday party.
A.asking for B.calling for C.hunting for D.sending for
答案 C
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