To _____ the truth，I really didn’t know anything about yesterday’s meeting．
A. do
B. put
C. tell
D. take
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不正当竞争行为的主体是（)
A. 政府机关
B. 政府官员
C. 经营者
D. 消费者
细胞外液的主要阳离子是？（）
A. Na+
B. K+
C. OH-
D. Ca2+
E. Mg2+
plight（）
A.work hard
B.serious and difficult situation or condition
C.crumbling
They daren’t ask for they are afraid _____.
A.of laughing at
B.to be laughed
C.of being laughed at
D.have been treated
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