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【单选题】
使乳糖操纵子实现高表达的条件是A.
乳糖存在
B.
乳糖缺乏，葡萄糖存在
C.
乳糖和葡萄糖均存在
D.
乳糖存在，葡萄糖缺乏
E.
葡萄糖存在
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【单选题】听力原文：Tutor: We're very pleased to welcome Professor lsaac Nebworth to our tutorial group today and he's come to share one of his pet passions with us - city traffic and our western dependence on the m...
A.
lead to better lifestyles.
B.
are a feature of wealthy cities.
C.
result in more city suburbs.
【简答题】We're pleased to annoounce that your (apply) __________ for membership has been accepted.
【单选题】听力原文： Welcome to this year's national tennis championship tournament. We're pleased that you will be here throughout the week to cover the championship matches. Remember that you are required to wear ...
A.
Athletes
B.
Film stars
C.
Journalists
D.
Politicians
【单选题】若在一个正弦（或非正弦）信号周期内取若干个点的值，取点的多少以能恢复原信号为依据，再将每个点的值用若干位二进制数码表示，这就是用数字量表示模拟量的方法。将模拟量转换为数字信号的介质为模／数转换器（ADC）。数字影像则是将模拟影像分解成有限个小区域，每个小区域中影像密度的平均值用一个整数表示。也就是说，数字化图像是由许多不同密度的点组成的，每个点内的密度是一均值。图像矩阵是一个整数值的二维数组。图像...
A.
分割-采样-量化
B.
采样-分割-量化
C.
ADC-分割-采样
D.
DAC-采样-量化
E.
分割-量化-采样
【单选题】We’re pleased to announce that your _______ for membership has been accepted.
A.
apply
B.
applying
C.
applied
D.
application
【单选题】OK, we’re off! Does this mean (a) we’re moving, or (b) we’re successful?
A.
(a) we’re moving
B.
(b) we’re successful
【简答题】We’re pleased to announce that your (apply) ___ for membership has been accepted.
【单选题】听力原文：Welcome to the Good Health Show. We're pleased to have well-known dietician Paulina Cruz on the show today. She will tell us how drinking a few extra glasses of water can help us lose weight and ...
A.
How to stay healthy.
B.
Where to buy health foods.
C.
What to eat when fatigued.
D.
How to conserve water.
【简答题】Joe. You seem to be very pleased today. Any good news?Ann: ______
【单选题】We’re _______ to listen to her _______ voice. It’s _______ to hear her sing.
A.
pleased; pleasing; pleasure
B.
pleased; pleasant; a pleasure
C.
pleasing; pleased; a pleasure
D.
pleasing; pleasant; pleasure
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