双曲线x2-ay2=1的焦点坐标是( ) A.(1+a,0),(-1+a,0) B.

题型:选择题

问题:

双曲线x2-ay2=1的焦点坐标是(  )
A.(
1+a
,0),(-
1+a
,0)
B.(
1-a
,0),(-
1-a
,0)
C.(-
a+1
a
,0),(
a+1
a
,0)
D.(-
a-1
a
,0),(
a-1
a
,0)
考点:双曲线的性质(顶点、范围、对称性、离心率)
题型:选择题

第II卷 (共55分)

第三部分写作(共三节,满分55分)

第一节单词拼写(共10小题;每小题1分,满分10分)

根据下列句子及所给汉语注释,写出空缺处各单词的正确形式。(每空只写一词)

(请将答案写在答题卡上的指定位置)

66.Don’t refer to a ______ (词典) every time you come across a new word.         66.______     

67.She asked us to give her an ______ (立刻的) answer.                            67.______     

68.______ (比较) to our small flat, Bill’s house seemed like a palace.         68.______     

69.He got up early in order to catch an early __________ (航班).                        69.______     

70.The ______(土豆)he picked out were weighed without short measure.    70.______     

71.The flight was badly ______ (推迟) because of the heavy fog.                   71.______     

72.After a good rest, her health is _________(渐渐地) picking up.                  72.______     

73.It happened in ______ (七月) when the weather was very hot.                      73.______     

74.Do you think everyone in western countries ______ (相信) in God?            74.______     

75.The outing was well ______ (组织) and everyone felt excited.                        75.______     

题型:选择题

在KMnO4、K2MnO4中,下列叙述正确的是(  )

A.锰元素的化合价相同

B.含有相同价态的原子团

C.含有不同价态的原子团

D.两种化合物的名称相同

题型:选择题

指挥钓鱼城保卫战的南宋抗战将领除王坚外,还有  [ ]

A、王立

B、张珏

C、蒙哥

D、忽必烈

题型:选择题

诸子之中,“()”主要有儒家和墨家二家。

题型:选择题

扁桃体切除术继发性出血常发生于()。

A.术后6h后

B.术后6~12h

C.术后24h内

D.术后1~2天

E.术后5~6天

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