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原子荧光光谱法适合测定食品中的什么元素含量?
A、Ca和As  
B、Na和K  
C、 Pb和Cd  
D、 As和Hg

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恩格斯的著作《_______》是最早系统探讨男女不平等的根源的著作之一。
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What does “anonymous” mean in the sentence “Funny you should say that random person that shall remain anonymous.”?
A、Having his or her name unknown
B、Hiding his or her titles or locations
C、Not showing his or her true nature
D、Hiding his or her personal information
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The Mongolian language, created as early as in the ear of Genghis Khan, is of the type of ( ) characters. There are 39 letters in present Mongolian with five vowels and 24 consonants. A. Sender B. Receiver C. Language D. Culture
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