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【单选题】
解决我国民族问题的基本政策是( )。A.
实行民族区域自治
B.
民族平等、民族团结、各民族共同繁荣
C.
根据民族特点实行差别待遇
D.
尊重各民族的风俗习惯
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】下列关于蛋白质的叙述，错误的是（）
A.
各种蛋白质的含氮量很接近，平均为16%
B.
氨基酸分子是两性电解质
C.
Trp、Tyr和Phe在280nm紫外波长处有特征性吸收峰
D.
在蛋白质分子中，氨基酸通过肽键连接形成肽
E.
组成人体蛋白质多肽链的基本单位是L-β-氨基酸
【单选题】Many doctors believe that the bypass operation______.
A.
is a better way of prolonging one's life
B.
is the only solution to the blockage of one artery
C.
should be used to prevent advanced diseases
D.
has no effect at all on serious patients
【简答题】简述多媒体教学软件的开发流程。
【单选题】Many doctors don‘t believe that music can treat diseases because __________. 查看材料
A.
recover from disease quickly
B.
there is not enough hard evidence
C.
use their minds actively
D.
it improves general well-being
E.
listen to musical performances
F.
it brings many other benefits
【单选题】How long has the speaker been in Britain?
A.
Three weeks
B.
Three months
C.
Half a year
【简答题】甲便利店为增值税小规模纳税人。2017年第四季度零售商品取得收入103000元;将一批外购商品无偿赠送给物业公司用于社区活动,该批商品的含税价格721元。已知小规模纳税人增值税征收率为3%,请计算该便利店第四季度应缴纳的增值税税额。
【单选题】How does the medical profession regard the bypass operation?
A.
Many doctors believe it to be the best answer for reducing heart disease.
B.
Many doctors think it should be used to prevent clogged arteries.
C.
Many doctors think the sooner it is used for a patient with early arterial disease, the more effective it is.
D.
Many doctors question the advisability of its use where only one artery is affected.
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