问题
单项选择题
根据国际标准，1μg视黄醇当量相当于β-胡萝卜素（）
A.0.6μg
B.6μg
C.0.167μg
D.1.67μg
E.60μg
答案
参考答案：B
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根据国际标准，1μg视黄醇当量相当于β-胡萝卜素（）
A.0.6μg
B.6μg
C.0.167μg
D.1.67μg
E.60μg
参考答案：B
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| By my third day in the hospital, I realized Tom didn't visit. I couldn't understand 1 my best friend wouldn't come to see me. Struggling against the 2 , I phoned his 3 . His mother answered, and when I asked for Tom, she got 4 . "He's not here right now," she said. I thought it was 5 that she didn't tell me where he was or 6 to have him call me. But I was so weak, I just let it 7 .I found out later that Tom's mother called my parents right after we rang 8 . My phone call really made her 9 , and she 10 they talk to me. Later that night, my mom 11 . Did I remember drinking? Did I remember in a car?I had 12 what she was talking about, so she finally told me the news: I'd hit a tree. Tom, in the 13 seat, was thrown from the car and killed instantly. The only reason I'd lived was because of my 14 . My first 15 was of shock.. I'd been drink-driving? Hit a tree? Killed Tom? I felt like the 16 person in the world. Even after I was able to 17 several weeks later, I didn't want to eat, I didn't want to talk. I just 18 at the wall in my 19 and cried. The only person I wanted to see was Tom. I didn't feel like 20 with any of my old friends. | ||||
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