皮皮学，免费搜题
登录
搜题
【单选题】
Parents should take seriously their children's requests for sunglasses _____ eye protection is necessary in sunny weather. [ ]A.
because
B.
though
C.
unless
D.
if
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Classify this amino acid (Met) on the basis of its R-group composition.
A.
polar, uncharged
B.
nonpolar, aliphatic(脂肪族的)
C.
polar, aliphatic
D.
positively charged
【单选题】Classify this amino acid (Thr) on the basis of its R-group composition.
A.
polar, uncharged
B.
nonpolar, aliphatic
C.
negatively charged
D.
None of these
【单选题】下列治疗阿托品中毒的措施中错误的是
A.
口服药物中毒时，应尽快洗胃
B.
用乙醇擦浴降低患者体温
C.
解救有机磷酸酯类中毒而用阿托品过量时，不能用毒扁豆碱
D.
用新斯的明对抗中枢症状
E.
用地西泮控制患者躁动情绪
相关题目：