13．(坐标系与参数方程选做题)在平面直角坐标系xOy 中，直线l的参数方程为(参数t∈R)，圆C的参数方程为(参数)，则圆C的圆心坐标为_______，圆心到直线l的距离为______.

答案：(0，2)；.

解析：直线的方程为x+y-6=0，d=;

70、Can you work out what these squiggles mean?

答案：68、事情的结果很不错。69、我一向无法了解她。70、你能辨认出这些潦草的字迹是什么意思吗？

69、I've never been able to work her out. ________________

(1)　　　 We must work out a plan as quickly as we can.<制定，拟定，定出>

(2)　　　 Have you worked out this problem yet?<算出，估计出>

(3)　　　 I can't work out the meaning of the poem.<理解，弄懂，看出>

(4)　　　 This map is wrong；I can't work out where we are.<判断，说出，看出>

(5)　　　 Things will work out if you will just be patient.<得到圆满解决>

(6)　　　 Things have worked out badly.<(情况等)结果是>

(题组训练)英译汉：

68、Things worked out quite well. ________________

(1)　　　 The assistant did not take her seriously and advised her to buy two bottles of very expensive wine.<认真对待>

(2)　　　 He led the ships down the river to a place where the British army could land safely and take the enemy by surprise.<突然袭击>

(3)　　　 I won't take up much of your time.<占去(时间)>

(4)　　　 The table takes up too much room.<占去，占据(空间)>

(5)　　　 When he left school he took up journalism.<从事某项活动，发展某种爱好>

(6)　　　 People should be ready to go to prison for their beliefs，but they should never take up anus to fight.<拿起武器>

(7)　　　 When you return to the office the following morning or after the holiday，you can listen to the messages and take any necessary action.<采取必要的行动>

(8)　　　 The teacher took up the lesson where he left off yesterday.<继续讲述>

(9)　　　 Jean took advantage of the lunch hour to finish her homework.<利用>

(10)　 I take back what I said.<收回>

(11)　 Take it easy.The roads are icy.<不要着急>

(12)　 He is taking over my job while I am on holiday.<接替，接管>

(13)　 He seemed to take great pride in his work.<对……感到骄傲>

(14)　 She had taken the trouble to buy the books for me.<费力，不怕麻烦>

(15)　 I'll take on the work，but I can't tell you exactly when I'll finish it.<从事>

(16)　 The Great Wall has taken on a new look since the liberation.<呈现>

(17)　 Is the supermarket taking on any more assistants?<雇用>

67、If you don't know the words，you can ________________ (refer to)a dictionary.

答案：65、turned up 66、turned down 67、turn to

66、His invitation is ________________ (refused).

(1)　　　 He was poor but proud and turned down every offer of help.<拒绝接受>

(2)　　　 The campers usually turned in as soon as it got dark.<上床睡觉>

(3)　　　 The teachers have to turn in the reports at the end of the school year.<上交>

(4)　　　 The examination turned out(to be)easy.<结果是，最后情况是>

(5)　　　 Bob turns over most of the money he earns to his mother.<移交，交给>

(6)　　　 The car struck the wall and turned over.<撞翻，翻倒>

(7)　　　 He turned over in bed.<翻身，翻转>

(8)　　　 Please turn over this page.<翻过>

(9)　　　 The missing boy turned up<出现>

(10)　 If you have some questions，you can turn to your teachers for help. <求助于>

(11)　 Mozart's music always turns me on/off.<使感兴趣／使不感兴趣>

(12)　 She turned away in horror at the sight of so much blood.<转身不看>

(13)　 Because the hall was full，many people were turned a way.<撵走>

(14)　 turn a blind eye to/on<视而不见>

(15)　 turn a deaf ear to <充耳不闻>

(16)　 turn about<向后转>

(17)　 turn against<反对，背叛>

(18)　 turn back<返回，折回，使往回走>

(19)　 by turns<轮流>

(20)　 in turn<一个挨一个地又(对别人)做同样的事>

(21)　 take turns<轮流(做某事)>

(题组训练)同义词组替换：

65、I have waited for him for hours but he hasn't ________________ (appeared)yet.

(1)　　　 On Friday 16th October，1987，a hurricane struck the southeast of England. <侵袭>

(2)　　　 The boy struck the man with a stick.<打>

(3)　　　 A stone struck me on the head.<打中，击中>

(4)　　　 I struck a match and held it to his cigarette.<擦燃(火柴)>

(5)　　　 An idea suddenly struck me.<(某种想法)忽然出现，使……忽然想起>

(6)　　　 He was struck by her beauty.<给人深刻印象>

(7)　　　 They are striking for higher pay.(=They，on strike for higher pay.)<罢工>

(8)　　　 I left immediately the clock struck twelve.<(钟)敲响>

(1)　　　 The letters" UK" stand for "The United Kingdom of Great Britain and Northern Ireland".<代表>

(2)　　　 I can't stand the hot weather.<忍受>

(3)　　　 You should learn to stand on your own two feet.<依靠自己，自主>

(4)　　　 stand out<显得突出，显眼，引人注目>

(5)　　　 stand by<站在一边，袖手旁观，支持，站在……边>