皮皮学，免费搜题
登录
搜题
【单选题】
下列哪种碱基几乎仅存在于DNA中A.
腺嘌呤
B.
鸟嘌呤
C.
胞嘧啶
D.
尿嘧啶
E.
胸腺嘧啶
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】When you meet a friend or someone you know, you should ______ them.
A.
play with
B.
laugh at
C.
greet
D.
hug
【简答题】1.When
you see this, you say, “______ careful! It’s erous!”
【简答题】根据句意填空,首字母已经给出。 1.When you want to post a letter,you need a s ________. 2.You room is u ________.You need to clear it up. 3.Edison was so c ________ that he invented a lot of things. 4.You have collec...
参考解析：
知识点：
题目纠错 0
发布
