蜜蜂往往成百上千地生活在一起，有的采集花蜜、有的建造蜂房、有_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题选择题

蜜蜂往往成百上千地生活在一起，有的采集花蜜、有的建造蜂房、有的喂养蜂王和幼蜂．蜂群之间的这种关系属于（　　）

A．竞争

B．合作

C．捕食

D．寄生

答案

蜜蜂往往成百上千地生活在一起，有的采集花蜜、有的建造蜂房、有的喂养蜂王和幼蜂．需要密切合作，才能维持群体的生活，因此蜂群之间的这种关系属于种内合作．

故选：B．

完形填空

完形填空。

     Look  1  the woman in a yellow coat.  2 is my teacher. She teaches  3  English. She is a good teacher.
Her   4 is Wang Hong. Her bike is red.  5 under the tree. Her brother, Wang Dong  6 in a black coat. His
bike is  7 . Their friends  8  Jack and Mike. They are  9 . My teacher, Wang Dong and their friends are  10
home now.

( )1. A. in
( )2. A. He
( )3. A. my
( )4. A. teacher
( )5. A. Its
( )6. A. is
( )7. A. a black
( )8. A. is
( )9. A. England
(     )10. A. to

B. see
B. She
B. I
B. student
B. It
B. am
B. a red
B. am
B. China
B. at

C. at
C. I
C. me
C. name
C. Is
C. are
C. black bike
C. be
C. America
C. for

D. for
D. It
D. mine
D. mother
D. It’s
D. put on
D. black
D. are
D. American
D. of

单项选择题

在下列遗传系谱中，它们可能的遗传方式种类依次为（）

A.2、3、1、4

B.1、2、2、3

C.2、3、1、3

D.1、3、1、4