在图形编辑中，如果单击绘图工具中的直线图标按钮，此时鼠标光标在文本区内变为()图形。
A、↖D
暂无解析
下列操作不能删除当前图层的是：
要删除所有打开的图象文件的历史记录，应采用下列哪个命令：
Directions:Inthissection,youwillhear10shortconversations.Attheendofeachconversation,aquestionwillbeaskedaboutwhatwassaid.Boththeconversationandthequestionwillbespokentwice.Aftereachquestiontherewillbeapause.DuringthepauseyoumustreadthefourchoicesmarkedA),B),C)andD),anddecidewhichisthebestanswer.ThenmarkthecorrespondingletterontheAnswerSheetwithasinglelinethroughthecenter.
1.A)Dosometyping.
B)Buysomepaper.
C)Askthemantotype.
D)Wanttorunwiththeman.
2.A)10:50
B)10:15
C)10:48
D)10:52
3.A)Husbandandwife.
B)Agirlandherboyfriend.
C)Teacherandstudent.
D)Oldfriends.
4.A)Policeman.
B)Salesman.
C)Cardriver.
D)Conductor.
5.A)Inaschool.
B)Inatheater.
C)Inarestaurant.
D)Athome.
6.A)Sheagreed.
B)Shedisagreed.
C)Shewasimpatient.
D)Shewasworried.
7.A)Somethingcold.
B)Coffee.
C)Tea.
D)Somethinghot.
8.A)Gold.
B)Blue.
C)Brown.
D)Black.
9.A)Hedidn’knowtwheretofindtheprofessor.
B)Hehaddifficultydoingtheexperiment.
C)Hefailedtheexam.
D)Hecouldn’graduatetfromtheuniversity.
10.A)Themaniscoughing.
B)Themangaveupsmoking.
C)Themanhasalungdisease.
D)Themanhasaheartattack
下面对图层上的蒙板的描述哪些是正确的（）
如果在图层上增加一个蒙板，当要单独移动蒙板时下面哪种操作是正确的：
