SOD是一种抗氧化酶,它能催化O2形成H2O2,增强植物的抗逆性。下图为培育农作物新品种的一种方式。以下叙述正确的是( )
A:①过程中最常用的方法是采用显微注射技术将SOD基因导入植物细胞
B:②、③分别表示脱分化、再分化过程,均无需严格的无菌操作就可以完成
C:SOD催化O2形成H2O2的机制是为该反应提供能量
D:该育种方式利用了细胞工程和基因工程,能体现细胞的全能性
阅读下面短文,按照句子结构的语法性和上下文连贯的要求,在空格处填入一个适当的词或使用括号中单词的正确形式填空 Do you know how to be a top student? Top students are decided by a new way now. New rules for middle school students ____ (come) out in March. The best students should not only have good grades. You'll be a top student ____ you follow the new rules.____ (one), you need to be honest. You should never copy others’ homework. Second, good students love animals and care____ other people. They try to do something to protect animals, too. Are you one of them? Third, you should learn that teamwork____ important. So be friendly to the people you are with and it can make your team stronger.
Mr. Black is going to marry a girl he ________ in Japan last year.