我们党历经挫折而不断奋起、历尽磨难而淬火成钢,正是因为始终把( )作为“源”和“本”,深深植根于人民之中。
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He had tried to put the unpleasant scene out of his mind, but it kept on _______ to him, especially in dreams.
A. contributing
B. owing
C. leading
D. recurring
An unexpected guest _______ on us last night.
A. decreased
B. declined
C. descended
D. dropped
The trend of brain drain does the developing countries _______ degrees of harm.
A. diverse
B. drive
C. diver
D. diversity
Some experts say the _______ weather recently experienced by China was caused by EI Nino.
A. flexible
B. abnormal
C. selective
D. decent