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【单选题】Color is very important to most animals for it helps them to get along in the world. Color (21) to make an animal difficult for its enemies to (22) . Many animals match their (23) so well that as lon...
A.
Even if
B.
Unless
C.
However
D.
As long as
【单选题】虚证泄泻的特点是
A.
大便清稀，完谷不化，腹部喜温
B.
大便色黄褐而臭，泻下急迫，肛门灼热
C.
泻下腹痛，痛势急迫拒按，泻后痛减
D.
大便时溏时泻，腹痛不甚，喜温喜按