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问题 选择题

洋葱根尖生长点细胞与蛙受精卵细胞的分裂，其不同点是[ ]

A．有无纺锤体的形成

B．有无染色体的出现

C．细胞分裂方式

D．纺锤体的形成方式及细胞分裂方式

答案

答案：D

填空题

下图是实验室制取气体的常用装置。

(1)仪器①的名称是_________________。

(2)用金属锌和稀硫酸反应制取氢气的化学方程式为__________________________；反应的发生装置是(填装置字母，下同)________；收集氢气应选择装置______。

(3)写出木炭在空气中充分燃烧的化学方程式_______________________________。
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填空题
根据课文内容，用方框中所提供的单词或短语的适当形式完成下列短文。
a series of,  go through,  see,  power,  or,  crazy,  on purpose,  too much,  hide,  so
     Anne was a Jewish girl who lived in Amsterdam in the Netherlands during World War Ⅱ. Just because they
were Jewish, Anne and her family had to hide away, 1______ they would be caught by the German Nazis.
     Anne hadn't been able to be outdoors for 2______ long a time that she had grown 3______ about everything
to do with nature. One evening, she stayed awake 4______ until half past eleven just in order to have a look at
the moon by herself. But as the moon gave out 5______ light, she dared not go downstairs until the window was
shut. The dark, rainy evening, the wind, and the thundering clouds held her entirely in their 6______. It was the
first time in a year and a half that she 7______ the night face to face.
     During the time in the 8______ place, Anne set down 9______ facts in a diary. Anne made the diary her best
friend to whom she could tell everything and in the diary she showed us what she 10______ during the war.
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