The word grouse in Paragraph 3 is closest in meaning to______.
A. talk
B. complain
C. speak
D. tell
因为营养不良，容易出现的主要营养问题
佝偻病、蛋白质一热量摄人不足、维生素缺乏、缺铁性贫血、缺锌症等
A. 胎儿期
B. 婴幼期
C. 学龄期
D. 青少年期
E. 老年期
According to the recommendation of the CDC, when should people receive vaccinations in America？
A. People should receive a vaccination one or two weeks earlier before influenza activity.
B. People should receive a vaccination before the influenza epidemic.
C. People should get flu shots in March when the influenza activity ends
D. People should get flu shots before October so as to develop antibodies
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