【名词&注释】
溶解度(solubility)、扩散系数(diffusion coefficient)、使用价值(use value)、菲律宾(philippines)、国际社会、完形填空(cloze test)、答题卡(answer sheet)、劳动产品(labour product)、单位面积(unit area)
[单选题]聚合物薄膜控释系统中，包衣膜hm，药物分子的扩散系数Dm，单位面积(unit area)体外累积释放量Q，药物在聚合物膜中的溶解度Cp，时间t，若hm较大，Dm极低则（ ）。
A. Q=Cphm/Dmt
B. Q/t=CpDm/hm
C. Q/t=hmDm/Cp
D. Q=CptDm
E. Q/t=hmhmDm
查看答案&解析
举一反三：
[单选题]第二节 完形填空（共20小题;每小题1.5分，满分30分）阅读下面短文，掌握其大意。然后从36～55各题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡(answer sheet)上将该项涂黑。
A. When Alice started to cycle home from Jenny’s house, she wasn’t nervous. She was certainly not afraid of the dark.36 , it was only a 15,ncnule ride home. But halfway there, she began to wish that he hadn’t been so 37 .
B. As she rounded a sarp benu, it suddenly 38 cold－very cold. Alice’s breath became puffs of white cloud and her legs aso cale that it became hard to ride.
C. With her liart beating fast, she struggled so hard to move 39 that the didn’t hear the car which suddenly appeared beside her. She stopped by the road. The big black car also 40 ,Slowly, the passenger-window began to slide down. Alice held her breath. In the soft light inside the car, something 41 . Then, the light brightened and Alice was staring at a sweet, grey-haired old lady. “Hello, dear,”said the old lady. “I need 42 . I’m afraid I’m lost. I need to find the nearest airport. I must be there in the next five minutes.”
D. “Airport? You 43 are lost,”Alice said. “You need to go back five kilometers 44 you reach the”
E. T-junction.Turn left and45 for about another 10 kilometers to the main highway.From there,just follow the46 to the airport.But I’m afraid there’s no47 you’ll get there in five minutes!”
F. “Thank you very much,dearn eplied the old lady.“Don’t worry-I’ll48 it time.”
G. The49 up and the started off.A little way ahead,it50 and with hedlights filashing, it drove past Alice. But then, mething51 happened.The car hegary changing flrst, its color52 from black to silvey grew when, the wheels began disappearing, but the car to move forward,53 just above the grolld. As the car54 into the dark sky, the big red tail-lights grew larger and larger and glowed more and more brightly.With a faint whistling55 ,the car was gone in seconds,leaving Alice shaking her head in disbelief…
H. 36____
I. However
J. Besides
K. Therefore
L. Othrwise
[单选题]Who probably wrote the letter?
A. An editor.
B. An artist.
C. A reporter.
D. A reader.
[单选题]海地发生大地震后，国际社会为菲律宾援助了大量的物品。这些物品（ ）
A. 不是商品，因为它们不是劳动产品(labour product)
B. 是商品，因为它们具有使用价值
C. 不是商品，因为它们没有用于交换
D. 是商品，因为它们满足了灾民的需要
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