问题
单项选择题
曲线上相邻两点，第一点正矢为64mm，第二点正矢为58mm，第一点拨道量为-4mm，第二点拨量为零，第二点拨后正矢为（）。
A、58mm
B、60mm
C、54mm
D、62mm
答案
参考答案：B
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曲线上相邻两点，第一点正矢为64mm，第二点正矢为58mm，第一点拨道量为-4mm，第二点拨量为零，第二点拨后正矢为（）。
A、58mm
B、60mm
C、54mm
D、62mm
参考答案：B
阅读下面短文，掌握其大意，然后从1 -15各题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。 " You probably don't remember me," she said. Then she pulled out a piece of paper from her ___1___ and gave it to me. It was my handwriting. As the assistant of the Honors Programs at the university, one of my __2___ was to review student transcripts(成绩单) to make sure they could ___3___ in Honors. It was common for students to have a(n) ___4___ start and they could no longer continue in Honors after their first term. However, sometimes their ___5___ term report cards would still be sent to us even though the students were no longer in the program. The note she handed me ___6___, " Congratulations on your excellent second term. You may have been ___7___ with your grades, but you should feel ___8___ of how you've made some progress. Best of luck in keeping up the good work, and you'll be able to succeed." The student went on and said, " You can't know what this ___9___ to me. I've carried it in my purse for three years and pulled it out anytime I didn't want to do my ___10___. For three years I've been ___11___ to enter your office and giving you this note and this ___12____. " she handed me her latest transcript with good marks. We were both ___13____. She cried and I ___14____ to. Writing the note seemed like nothing to me, but it meant so ___15___ to her. I really had no idea that my actions had such meaning.
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