___ shows Line 3; ___ shows Line 2; ____ shows Line 1.

给定下面的代码片段： 哪些行会导致错误？ （） A:  line 1 B:  line 2 C:  line 5 D:  line 8

Theword“forward”inparagraph3,line2oftheemailisclosestinmeaningto______. A: advance B: send C: receive D: return

Theword“quote”inparagraph4,line2oftheemailisclosestinmeaningto______. A: saying B: option C: price D: reference

以下不能够读入空格字符的语句是 A: charline;line＝ciget() B: charline;ciget(lin; C: charline;cin＞＞line; D: charline[2];cigetline(line,2);

which (Para. 6, Line 2): ___________________________________

The ratio between the thickness of the thin line and the bold line is A: 4 B: 2 C: 0.5 D: 0.25

In Para. 2 Line 3, “shod” means ___________.

which of the following requirements for extension line is correct? A: it should be draw by bold solid line B: about 2 mm from the contour line C: a bout 2 mm beyond the dimension line D: Other lines in the drawing should not be used as the extension line. E: about 2-3mm in length

obstacle (Para. 2, Line 2): ______ A: arrie B: advantage C: situation