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【简答题】
自制原始凭证按其填制手续不同可以分为一次凭证、 、 和记账编制凭证。
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反馈参考答案：
举一反三
【简答题】光敏电阻的暗态前历一般比亮态前历的响应时间 。（长/短）
【单选题】Thousands of animal lives would be ______ daily if we just eat vegetables.
A.
spared
B.
freed
C.
escaped
D.
released
【单选题】We should eat a lot of fruit and vegetables ___________ . [ ]
A.
having good health
B.
to stay healthy
C.
keep in good health
D.
stay healthy
【简答题】设随机变量 ，则 的值为_____.
【单选题】Health is very important to us, We should eat more vegetables and fruit instead of _____ rich food. [ ]
A.
too much
B.
much too
C.
very much
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