大黄中的成分主要为
A. 香豆素
B. 木脂素
C. 黄酮
D. 蒽醌
E. 生物碱
The battle hero we ___an ordinary soldier at first gave us an inspiring speech.
A. took on
B. looked on
C. looked up on
D. took for
Cars ___ up a great deal of valuable space on the roads.
A. catch
B. take
C. hold
D. cover
The boss was asked to take ____ Bob as an office boy.
A. up
B. over
C. in
D. on
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