慢性萎缩性胃炎病人均有慢性贫血的临床表现。
参考答案:错
We are ______by doctors to eat more natural food and take plenty of physical exercise.
[ ]
A. suggested
B. warned
C. informed
D. advised
在海洋中,最著名的不连续分布有哪些方式()
A.两级同源分布
B.北方两栖
C.南方两栖
D.环极地分布