问题
单项选择题
半胱氨酸和酪氨酸在体内可分别由______转变而来。
A．蛋氨酸和赖氨酸
B．赖氨酸和色氨酸
C．蛋氨酸和苯丙氨酸
D．色氨酸和苯丙氨酸
E．色氨酸和赖氨酸
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
半胱氨酸和酪氨酸在体内可分别由______转变而来。
A．蛋氨酸和赖氨酸
B．赖氨酸和色氨酸
C．蛋氨酸和苯丙氨酸
D．色氨酸和苯丙氨酸
E．色氨酸和赖氨酸
参考答案：C
| 根据表格内容填空，补全短文，使短文句意完整。 | ||||||||||||||||||||
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| Tom Srmth is English. He is 12. He is in No.6 Middle School. Is he in Class 4, Grade l? Yes,he is. There are 6 _ people in his family. Ami Smith is his 7 . She is 60. His father's name is John Smith 8 41. What's his mother's name? It's Kate Smith. How old is she? She's 9 . Who is Mike Smith? He's Tom's 10 . He is only eight. |