参与原核生物DNA切除修复的酶或蛋白有
A.UvrA,U,rrB,UvrC蛋白
B.拓扑异构酶
C.DNA聚合酶Ⅲ
D.连接酶
参考答案:A,D
根据括号里的解释,把句子补充完整。
1. You are not fit, and you should change your (the way you live).
2. Food can give us a lot of (power (力量) to do things).
3. Eddie is very lazy and he never (do sports activities).
4. (a kind of yellow fruit) taste sour, but mooncakes taste sweet.
5. Do you have a healthy (the food you usually eat)?
雾天防御性驾驶要点包括()。
A.出车前关注天气,了解到行驶路线有大雾时,尽量更改行车路线或时间
B.行车时遇大雾,应打开收音机,关注雾情,了解前方是否发生事故,以便提前采取措施
C.提高警惕,保持慢速和合适间距
D.团雾天气行车时,更要保持慢速和合适安全间距