问题
单项选择题
一般用短虚线表示，描绘时也可不闭合的曲线是( )。
A．首曲线
B．计曲线
C．间曲线
D．助曲线
答案
参考答案：D
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一般用短虚线表示，描绘时也可不闭合的曲线是( )。
A．首曲线
B．计曲线
C．间曲线
D．助曲线
参考答案：D
| 完形填空。 | |||
| Mr. White liked shooting very much. When he had time, he __1__ shooting with his friends. But one summer he said to himself, "I haven't been to the mountains before. My holiday __2__ soon, so I'm going to go to the mountains to __3__ deer. That must be interesting, I think. " So __4__ his holiday came, Mr. White went to the station, __5__ his ticket for the small station near the mountains. He __6__ at the small station and walked through fields and forest for __7__ kilometers. Then he saw a farmer in the field. "Good morning," Mr. White said to him, "are there any deer here?" "Well," answered the farmer __8__ . "There was one last year, but the man __9__ the town came and shot at it, and it __10__ to another place now, I think. " | |||
| ( ) 1. A. will go out ( ) 2. A. began ( ) 3. A. see ( ) 4. A. if ( ) 5. A. buy ( ) 6. A. got off ( ) 7. A. few ( ) 8. A. slow ( ) 8. A. to ( ) 10. A. has gone | B. went out B. have begun B. play with B. before B. bought B. got on B. a few B. quick B. from B. went | C. has gone C. are going to finish C. shoot C. when C. will buy C. gets off C. a lot C. fast C. on C. goes | D. goes out D. will begin D. look at D. because D. brought D. has got off D. a little D. slowly D. for D. is going |