问题
单项选择题 A1/A2型题
以下为人体非必需氨基酸的是()。
A.色氨酸
B.苏氨酸
C.蛋氨酸
D.精氨酸
E.赖氨酸
答案
参考答案:D
以下为人体非必需氨基酸的是()。
A.色氨酸
B.苏氨酸
C.蛋氨酸
D.精氨酸
E.赖氨酸
参考答案:D
My name is Li Lei. I am a student. I 1 in Star Middle School. 2 six grades in our school. I am in 3 . I go to school 4 in the morning. There are four 5 in the morning and two in the afternoon. We study Chinese, Maths, English and some 6 lessons. There are 7 teachers 8 school. 9 good teachers. They are 10 to us.
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