下列()不属于替代品。
A.牛肉和猪肉
B.火车票和飞机票
C.鲜奶和奶粉
D.汽车和房屋
参考答案:D
单词拼写 (共5小题,每小题1.5分,满分7.5分)
小题1:Many people are (关注) about the rise of the food price.
小题2: He caught a cold yesterday and (遭受) from a headache last night.
小题3: What is your (态度)towards the questions?
小题4:His failure was a great (震惊)to us.`
小题5: An earthquake left the whole city in (废墟).
血液循环中血栓随血流运行发生相宜的血管阻塞的过程称之为
A.梗死
B.血栓形成
C.血栓运行
D.血栓栓塞
E.栓子