0  253876  253884  253890  253894  253900  253902  253906  253912  253914  253920  253926  253930  253932  253936  253942  253944  253950  253954  253956  253960  253962  253966  253968  253970  253971  253972  253974  253975  253976  253978  253980  253984  253986  253990  253992  253996  254002  254004  254010  254014  254016  254020  254026  254032  254034  254040  254044  254046  254052  254056  254062  254070  447090 

8. As there was a(n)      failure and we couldn’t do anything at home without electricity, he suggested a walk out I the open, but I simply didn’t have the      .

    A. energy, force                       B. force, power   

    C. power, force                                         D. power, force

试题详情

7. Experts warn that global warming will cause dramatic climate changes including more  

floods, heat waves and droughts.

    A. usual           B. ordinary         C. frequent       D. common

试题详情

6. -It’s a red light, William. You       the car.

-OK. Just in time.

    A. must stop                         B. will stop    

    C. must have stopped                                      D. should have stopped

试题详情

5. Shella forgot all about the dog and the TV set,      in the new magazine that had come in the mail.

    A. deeply lost                         B. deeply losing   

    C. was deeply lost                       D. and deeply lost

试题详情

4. It is only when the stress gets out of control     it can lead to poor performance and ill health.

    A. when            B. until           C. that        D. before

试题详情

3. -Did you attended Mary’s wedding ceremony last August?

-I wish I      . I       abroad.

    A. had, would study                    B. did. Have studied  

    C. do , had studied                    D. had, was studying

试题详情

2. The story is set in      1949 Beijing,       year that witnessed the foundation of

       New China.

    A. / , a , the                                          B. the , the , the  

    C. / , a , /                             D. the , the , /

试题详情

第一节:单选题(共20小题,每小题1分,满分20分)

从A、B、C、D四个选项中,选出可以填入空白处的最佳选项。

1. -I didn’t do well in the math exam. What about you?

  -I did      you. Maybe even worse.

    A. as well as                         B. not worse than    

    C. no better than                        D. not better than

试题详情

(二)结果预测:

                                        

(三)结果及讨论:

若增强单色光光照强度,能否对实验结果产生影响?

试在右边同一坐标图中画出不同类型的单色光下,光照强度与光合作用强度的关系曲线来说明这个问题。

同升湖国际实验学校

试题详情

(一)实验步骤:

(1)取生长旺盛的绿叶,用直径为1cm的打孔器打出小圆形叶片30片(避开大的叶脉)

(2)将圆形叶片置于注射器内,并让注射器吸入清水,待排出注射器内残留的空气后,用手堵住注射器前端的小孔并缓缓拉动活塞,重复几次。

(3)将处理过后的小圆形叶片放入黑暗处盛有清水的烧杯中待用,此时叶片将全都沉到水底,这是因为                               

(4)取甲、乙、丙三只小烧杯,                          

     ___________________________________________________________________________

_______________________________________________________________。

(5)观察并记录同一时间段内各实验装置中小圆形叶片浮起的数量。

试题详情


同步练习册答案