国际货物买卖合同的标的物是（）。
A.股票
B.债券
C.票据
D.有形商品
参考答案：D
以下四种植物组织中，具有输导功能的是
The boy said _____ couldn't he work out the problem but his teacher didn't know how to do it. [ ]
A. though
B. never
C. hardly
D. not only
