The single room offered in section A would be suitable for a student ______.
A. fond of keeping pets
B. doing intensive study
C. anxious to make new friends
D. wanting self-contained accommodation
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慢性萎缩性胃窦炎主要与下列哪种致病菌感染有关
A. 大肠杆菌
B. 金黄色葡萄球菌
C. 幽门螺杆菌
D. 溶血性链球菌
下列有关表面活性剂结构描述正确的是
A. 表面活性剂分子一般由极性烃链和一个以上的非极性基团组成
B. 极性基团只可能是离子基团
C. 烃链长度在6个碳原子以上
D. 极性基团可以是碳酸及其盐
E. 脂肪酸类表活性剂(R-COO-)中,R-为亲油基团
某片剂标示量为100g,测得颗粒剂中主药含量50%,则每片颗粒重
A. 300rug
B. 200mg
C. 150mg
D. 100mg
E. 50mg
How can a mother help the baby to cry less
A. Cuddle the baby until he is quiet.
B. Leave the baby alone.
C. Do not always attend to the baby.
D. Teach the baby not to cry.