题目

短文填空 根据短文内容及首字母提示写出所缺单词, 并将完整单词写在答题卡对应题号的横线上。 As we celebrate the Year of the Sheep, some of you may have heard some superstitions(迷信) about this animal sign. It is said that people born in the Year of the Sheep have a difficult life. That’s because sheep are gentle and k  1  . Therefore, many Chinese people would try to avoid getting married or giving birth d  2   the Year of the Sheep. But is this all really true? Of course, it doesn’t make sense, a  3   to Wang Juan, a folklore exper以下是一个探究实验,请阅读后回答后面的问题.探究:酵母菌以什么为生?问题:葡萄糖或食盐对酵母菌的生活有什么影响?材料:4个圆气球、4根塑料棒、葡萄糖、食盐、温水(40-45)、烧杯、干酵母粉、量筒、4个小口瓶.实验步骤:(1)将4个气球松开,以便往里面充气.(2)用烧杯在每个瓶中加入等量的温水.再按下表依次加入不同的内容物.(3)用4根干净的塑料棒将溶液分别搅拌均匀(注意不要混用),并迅速地在瓶口处套上一个气球.确保气球口紧紧围住瓶口.(4)把4个瓶子放在一个温暖但不通风的环境中,观察并记录所 发生的一切.分析上述实验并回答:(1)实验过程中,______气球会变大,______气球会保持原样.(2)气球变大的原因是:酵母菌能将葡萄糖分解成______和______,并且释放出能量的缘故.
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