A:组成人体血清白蛋白的单体中没有甲硫氨酸和缬氨酸
B:mRNA与核糖体结合前去除了最前端的部分碱基序列
C:mRNA起始密码所在位置的碱基在翻译前发生了替换
D:肽链形成后的加工过程中去除了最前端的部分氨基酸
一共有多少只动物?
同学们做操,排成一个正方形的队伍,从前、后、左、右数,小红都是第5个,问一共有 ____ 人.
①我们村子前面的小山包,远远看去真像一个绿色的大绒团。____
②水面和潭底,金色的光斑和银色的光斑交错着;水泡闪亮闪亮的,射出红的光,黄的光,绿的光,紫的光……多像一串一串彩色的珍珠啊!____
Everyone (人人)needs to be healthy. Do you eat healthy food every day? It’s important (重要)for your health. You need fruit, like oranges, apples and bananas. “ An apple a day can keep away(避开) the doctor (医生).” You also need vegetables, like carrots and broccoli. Fruit and vegetables are good for our health. But don’t eat lots of chocolate. It’s not good healthy food. What about dessert? Don’t eat lots of dessert because it’s not good for your health. Many people eat lots of chocolate and dessert, so they are unhealthy. Sports can also keep you healthy. Play sports every day. Don’t be lazy. You can be healthy.