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【单选题】
欲将一张曝光过度的照片,降低曝光度,可以使用以下哪组软件A.
美图秀秀、 ACDSee
B.
画图、会声会影
C.
Photoshop、 Cool edit
D.
PowerPoint、 Premiere
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反馈参考答案：
举一反三
【简答题】在Rt△ABC中，∠ACB=90°，∠A=30°，BC= . 动点O在AC上，以点O为圆心，OA长为半径的⊙O分别交AB、AC于点D、E，连结CD. 小题1:如图1，当直线CD与⊙O相切时，请你判断线段CD与AD的数量关系，并证明你的结论； 小题2:如图2，当∠ACD=15°时，求AD的长
【单选题】如图，在直角梯形ABCD中，AD∥BC，∠ABC=90°，AB=BC，E为AB边上一点，∠BCE=15°，AE=AD，连接DE、AC交于F，连接BF，则有下列4个结论：①△ACD≌△ACE；②△CDE为等边三角形；③EF：BE=2：3；④S △ECD ：S △ECF =EC：EF。其中正确的结论是 [ ]
A.
①②
B.
①②④
C.
③④
D.
①②③④
【单选题】Yesterday we learned some new words and now .
A.
think them about
B.
think over them
C.
think them over
D.
think it over
【单选题】Yesterday we went to a park ________ is newly built, ________ we had a very good time.A．where; t
A.
14. Yesterday we went to a park ________ is newly built, ________ we had a very good time. A．where; that
B.
in which; that
C.
which; where
D.
that; which
【简答题】Dear Mike, We got your letter yesterday. Yes, we can visit you at Christmas. (A) Although we thought to spend Christmas at home, but now we are going to be with you. Jack will not be in school then. T...
【简答题】形状误差曲线上当相邻两波峰(或波谷)间的距离为( )mm时，表示表面粗糙度。 A.20
【简答题】任务型阅读。 Dear Mike, We got your letter yesterday. Yes, we can visit you at Christmas. We wanted to spend Christmas at home, but now we are going to be with you. Jack will not be in school then. It is co...
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