问题 问答题 简答题

牛、马何时输数受胎率较高?

答案

参考答案:

牛的输精时间主要根据其发情表现。一般在母牛发情后12—20小时进行第一次输精,隔8—12小时进行第二次输精。

马的输精时间一般根据卵泡发育情况来判定,即“三期酌配,四期必输,排后灵活追补”。也可根据发情时间来确定输精,通常在母马发情后的第4天开始输精,连日或隔日进行,输精次数不超过3次为宜。

填空题

先通读下面的短文,掌握其大意,然后根据短文内容和所给的首字母,在空格内填入一个适当的词,使短文意思完整。

  Happiness is for everyone. You don’t need to care about those people who

have becautiful houses with large gardens and swimming pools or those who

have nice cars and a lot of money and so on. Why? Because those who have big

houses may often feel 1.l_____ and those who have cars may want to walk on the

2.c_____ roads at their free time.In fact, happiness is always 3.a_____ you if

you put your heart into it.When you are in 4.t_____ at school, your friends will

help you; when you study hard at your lessons, your parents are always 5.t_____

good care of your life and your health; when you get 6.s_____,your friends will

say congratulations to you; when you do something wrong, people around you

will help you to 7.c_____ it.And when you do something good to others, you

will feel happy,too. All these are your happiness. If you 8.n_____ a bit of them,

you can see that happiness is always around you. Happiness is not the same as

money. It is a feeling of your heart.When you are poor, you can also be very

happy, because you have something else that can't be 9.b_____ with money.

When you meet with 10.d_____, you can say loudly you are very happy, because

you have more chances to challenge(挑战)yourself. So you can’t always say you

are poor and you have bad luck

  As the saying goes, life is like a revolving(旋转的)door. When it does, it

also opens. If you take every 11.c_____ you get, you can be a happy and

12.l_____person.

单项选择题 A1/A2型题