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【单选题】
经血液体液传播病原体不包括( )A.
乙型肝炎病毒
B.
丙型肝炎病毒
C.
人类免疫缺陷病毒
D.
麻疹病毒
E.
疟原虫
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反馈参考答案：
举一反三
【单选题】下列实验操作与预期目的或所得结论一致的是
A.
用铂丝蘸取某溶液进行焰色反应，火焰呈黄色，证明该溶液中一定不含有K ＋
B.
向浓度均为0.1 mol·L － 1 NaCl和NaI混合溶液中滴加少量AgNO 3 溶液，产生黄色沉淀，说明K sp (AgCl)＞K sp (AgI)
C.
向某溶液中加入硝酸酸化的Ba(NO 3 ) 2 溶液，出现白色沉淀，说明该溶液一定含有SO 4 2 －
D.
在乙酸、乙醇与乙酸乙酯的混合物中加入适量饱和烧碱溶液充分混合后分液，可得到较纯净的乙酸乙酯
【单选题】E是下列物质中的一种，E的焰色反应为黄色，E加AgNO 3 和稀HNO 3 溶液有白色沉淀，E是
A.
FeSO 4
B.
NaCl
C.
BaCl 2
D.
Na 2 CO 3
【单选题】听力原文：M Tell me about your work experience, Susan. F Well, I've been working as a bank cashier for six years. M And what else have you done? F I trained as a secretary and later went to work for Morley...
A.
She worked in a bank.
B.
She worked in a shop.
C.
She worked in an office.
【简答题】Work in moderation is agreeable as well as ______ (health)to human beings.
【单选题】— He hasn’t finished the work yet. — Well, he _____.
A.
ought
B.
ought to
C.
ought to have
D.
ought to have finished
【单选题】-Does the new programme work well on tourism. -Yes. It ____ more tourists. [ ]
A.
brings in
B.
applies for
C.
results from
D.
leads to
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