下面哪些选择工具形成的选区可以被用来定义画笔的形状（）

Directions:

Thissectionistotestyourabilitytocomprehendshortpassages.Youwillheararecordedpassage.Afterthatyouwillhearfivequestions.Boththepassageandthequestionswillbereadtwotimes.Whenyouhearaquestion,youshouldcompletetheanswertoitwithawordorashortmphrase(innomorethan3words).Thequestionsandincompleteanswersareprintedinyourtestpaper.YoushouldwriteyouranswersontheAnswerSheetcorrespondingly.

16、Whatproductdoesthecompanyproduce?______.

17、Whenwasthecompanysetup?______ago.

18、Wherearetheirproductssold?Both______andabroad.

19、Accordingtothespeaker,whydotheirproductshaveagoodreputation?

Becauseofthehighqualityandgood______theyprovide.

20、Whatdoesthespeakerpromisetogiveforalargeorder?A______.

对于直径较大，断面不平整宜采用对焊的工艺为（）。

下面哪些是文字图层中抗锯齿的类型：

建筑材料按其物化性质可分为（）。