下列各组性状中，属于相对性状的是（）
A.豌豆的高茎与绿色豆荚
B.羊的黑毛与兔的白毛
C.棉花的细绒与长绒
D.人的双眼皮与单眼皮
参考答案：D
根据句意、汉语和首字母补全单词。
1. The box is too h_______. I can't carry it.
2. I have _______ (四十) books.
3. What time is it? It's a _______ past four.
4. Don't _______ (忘记) to bring your guitar.
5. I see a __________ in the zoo.
硅铁冶炼对焦炭有哪些要求？
