卫星DNA的多态性是由()所决定的。
A.DNA点突变个数
B.限制性内切酶识别序列个数不同
C.DNA的二级结构不同
D.重复单位不同
E.重复次数不同
参考答案:D
根据句意及首字母提示完成句子。
1. First, put the popcorn into the popcorn p_______.
2. F_______, drink it.
3. P_______ the water into the cup.
4. People often eat w_______ in summer.
5. If you want to eat a banana, you should p_______ it first.
6. Y_______ is made form milk. It tastes delicious.
7.On thanksgiving day, people in the western country usually eat big birds such as t_______.
8. Put the lettuce on a s_______ of bread.
现金流量表分为三个部分:经营活动的现金流、投资活动的现金流、融资活动的现金流。买卖其他公司的股票等投资行为属于()。
A.经营活动的现金流
B.投资活动的现金流
C.融资活动的现金流
D.销售活动的现金流