我国胃癌高发区的幽门螺杆菌率是()
A.50%
B.60%
C.70%
D.80%
E.90%
参考答案:B
解析:我国胃癌高发区的幽门螺杆菌率是60%。
补全对话。
A: What's the 1 ?
B: It's seven o'clock.
A: It's time 2 go to school.
B: Let 3 go together.
A: What's the first 4 ?
B: Maths .
A: 5 you like maths ?
B: 6 , I do. And you?
A: Me too.
南沙参具有而北沙参不具有的功效是()
A.补肺阴
B.清肺热
C.益胃阴
D.清胃热
E.补气