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【单选题】
Dialogues 1 Vocabulary 1. steal /sti:l/ n. a great bargain 2. buck / bʌk/ n. (informal) one dollar 3. break even end up with no profit or loss at the end of some business activity 4. throw in add or include 5. stick with stay with, not changing to something else Listen to the dialogue again and choose the best answer to each of the following questions . 1 Why did the man not buy the ring for sale?A.
He doesn't think it is very special.
B.
Someone else bought it before him
C.
He has no need for a ring
D.
The ring is too small.
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皮皮学刷刷变学霸
举一反三
【简答题】化学是造福人类的科学，在古代，我国______的制造、______和______的冶炼与应用、______的发明、______的烧制都是举世闻名的．
【单选题】钻木取火的发明是摩擦生热经验的启示，轮子的发明源自圆木滚动省力经验的启示，这表明( )。
A.
创造发明来源于人类的经验或向自然学习的结果
B.
创造发明源于人类生存发展的需要
C.
创造发明是人类智慧和创造力的结晶
D.
创造发明不需要任何思考
【单选题】小青龙汤证的病因病机是
A.
风寒束表，阳郁化热，表寒里热
B.
风寒束表，水饮内停，表寒里饮
C.
风寒犯表，营卫不和，卫闭营郁
D.
风寒袭表，营卫不和，卫强营弱
E.
素有郁热，复感风寒，外寒内热
【简答题】( 010101 )2 ∨ ( 110110 )2 =(__)2;