人体躯干共3个头长，其中脐孔稍下至耻骨稍下为（）个头长。
A.1
B.1/3
C.1/2
D.1/4
参考答案：C
写出下列句子中画线单词的反义词。
1. I like this shirt, but I don't like _________ one.
2. Tom lives in a very big house, but he has a very __________ bed.
3. The park is far from school, but it's ___________ the shop.
4. My shirt is new, but her shirt is __________.
5. He is shorter but she is ___________.
如果y=6x，那么x和y成______比例．
