鲕粒灰岩
参考答案:
主要由鲕粒组成,是在水动力条件相当强条件下沉积形成的,基底部分大都是亮晶方解石胶结物。
选择与画线部分意义相同或相近的选项。
1. The dog is kind of dangerous.
A. a kind of
B. a little
C. a little of
D. a bit of
2. Jim looks like his father.
A. is like
B. likes
C. looks at
D. is liking
3. There is nobody on the street.
A. no one
B. anybody
C. no man
D. not anybody
4. I would like to visit a friend this afternoon.
A. think
B. hope
C. want
D. go
5. My brother's favorite food is beef. What about you?
A. What are
B. How are
C. How about
D. What for
女性,45岁,间歇性发作咽下困难3个月,伴反酸烧心,可因情绪波动诱发。食管造影未见异常。
诊断首先考虑()
A.食管癌
B.胃食管反流病
C.食管贲门失弛缓症
D.食管裂孔疝
E.硬皮病