热点试题

[ 生物 ] 性染色体只存在于性细胞中。 [ ]

性染色体只存在于性细胞中。 [ ]

2016-05-17 |

[ 数学 ] 若tan(+)="3," tan(－)="5," 则tan2= （）A．B．－C

若tan(

)="3," tan(

－

)="5," 则tan2

= （）

A．

B．－

C．

D．－

2016-05-17 |

[ 数学 ] 若扇形的半径为4cm，面积为8πcm2，则扇形的弧长为______cm．

若扇形的半径为4cm，面积为8πcm²，则扇形的弧长为______cm．

2016-05-20 |

[ 数学 ] 已知Rt△ABC中，∠C=90°，tanA=，BC=8，则AC等于（） A．6 B．

已知Rt△ABC中，∠C=90°，tanA=

，BC=8，则AC等于（）

A．6

B．

C．10

D．12

2016-05-20 |

[ 数学 ] 农场有75头奶牛，是水牛头数的5倍，那么水牛有多少头？

农场有75头奶牛，是水牛头数的5倍，那么水牛有多少头？

2016-05-20 |

[ 数学 ] 下列说法正确的是（） A．一个命题的逆命题为真，则它的否命题为假 B．一个命题的逆命题为

下列说法正确的是（　　）

A．一个命题的逆命题为真，则它的否命题为假

B．一个命题的逆命题为真，则它的逆否命题为真

C．一个命题的逆否命题为真，则它的否命题为真

D．一个命题的否命题为真，则它的逆命题为真

2016-05-22 |

[ 数学 ] 若函数g（x）=lg（x2-ax+3a）在[2，+∞）是增函数，则实数a的取值范围是___

若函数g（x）=lg（x²-ax+3a）在[2，+∞）是增函数，则实数a的取值范围是______．．

2016-05-22 |

[ 数学 ] 下列程序运行后输出的结果为 [ ] A.17 B

下列程序运行后输出的结果为

[ ]

A.17
B.19
C.21
D.23

2016-05-26 |

[ 语文 ] 以“阅读”为话题仿写句子。阅读化育气质，_______，_

以“阅读”为话题仿写句子。
阅读化育气质，_______________，_______________。

2016-05-27 |

[ 英语 ] 完形填空。 Look at the picture of the twins' _

完形填空。
Look at the picture of the twins' __1__. __2__ are white and the windows are big. On one of the
walls you can see __3__ old photo of their family. Their__4__ is American (美国人). She is a teacher
__5__ English. She is __6__ a white hat. Behind her __7__ their father. He __8__ young (年轻的).
The boy in the red coat is __9__ brother. The twins are sitting __10__ the floor. They look like their
father and mother.

(     )1. A. backpack
(     )2. A. The wall
(     )3. A. a
(     )4. A. father
(     )5. A. of
(     )6. A. in
(     )7. A. are
(     )8. A. looks
(     )9. A. his
(     )10.A. in

B. class
B. A wall
B. an
B. mother
B. in
B. on
B. be
B. are
B. her
B. on

C. room
C. Walls
C. in
C. uncle
C. with
C. of
C. am
C. look
C. their
C. under

D. family
D. The walls
D. two
D. brother
D. on
D. at
D. is
D. am
D. your
D. behind

2016-05-27 |