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【单选题】
经典型苯丙酮尿症，是由于缺乏下列哪种酶引起的苯丙氨酸代谢障碍（）A.
L-谷氨酸脱羧酶
B.
二氢生物蝶呤还原酶
C.
6-丙酮酰四氢蝶呤合成酶
D.
酪氨酸羟化酶
E.
苯丙氨酸-4-羟化酶
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【简答题】Talking through a screen door while standing outside a house is not co ns idered by most America as being ________ the house or room in any see of the word.
【简答题】I looked down the counter, and all the people behind the counter were just standing there, drinkingcoffee and staring into a dark screen翻译是
【简答题】The screen standing ________ the couple is that they are from different countries
【单选题】听力原文：(A) The woman is touching the computer screen. (B) They are standing side by side. (C) They are looking at the monitor. (D) The man is trying on some clothes.
A.
B.
C.
【单选题】The screen standing___________the couple is that they are from different countries.
A.
in
B.
between
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