跌宕diē dànɡ

合法是劳动合同有效的前提条件。具体表现为劳动合同的主体合法，劳动合同的形式合法，劳动合同的内容合法，订立劳动合同的目的也要合法。( )

人免疫缺陷病毒属于（）。

A.单链DNA病毒

B.双链DNA病毒

C.单链RNA病毒

D.双链RNA病毒

E.缺陷型病毒

新加坡海外贸易公司（OVERSEAS TRADE COMPANY, 100 JULAN SULTAN, #01-20 SULTAN PLAZA, SINGAPORE 0719）与上海机械进出口公司(SHANGHAI MACHINERY IMPORT & EXPORT CORP. 383. Jiangning Road, Shanghai China)达成销售协议，其中协议第三条规定：除双方另有协议外，价格按CIF条件包括佣金3%；保险按发票金额的110%投保一切险和战争险，以现行中国保险条款为准；支付方式为不可撤销即期议付信用证。2007年12月间，新加坡海外贸易公司来电洽购货号727金星牌彩色电视机5000台，型号SC374，制式PAL/BG，220伏、50赫兹，双圆头插座带遥控（Gold Star Brand Colour Television Set, Model SC374, PAL/BG System, 220V 50Hz, 2 round pin plug, with remote control）；纸箱装（内用发泡塑料成型填充），每箱1台。以下是新加坡海外贸易公司与上海机械进出口公司往来电文： （1） Dec. 4th (incoming)：Gold Star Brand Colour Television set, model sc374, pal/bg system, 220v 50hz, 2 round pin plug, with remote control art 727 please fax present price available quantity for shipment February 2008 （2） Dec. 5th (outgoing) Yours fourth gold star brand colour television set art 727 in cartons of one set each reference price US Dollars 80.00 per set CIFc3 Singapore March shipment（3）Dec. 6th(incoming)：Yours fifth interested in 5000 sets CIFc5 February shipment please offer（4）Dec. 7th (outgoing):Yours sixth offer subject reply here tenth 4000 sets USD80.00 per set CIFc3 Singapore March shipment irrevocable sight L/C（5）Dec. 9th(incoming)：Yours 7th 5000 sets USD 72.00 CIFc5 Februbry shipment Credit 60 days Sight reply immediately（6）Dec. 10th (outgoing):Market tends upward demand keen your price too low regret unable counter offer（7）Dec. 12th(incoming):Yours 10th bid 5000 sets USD76.00 CIFc5 per set insurance amount 120 percent of CIF invoice value Feb. Shipment Credit 60 days Sight please reply before fourteenth（8）Dec. 13th(outgoing):Yours 12th we can only supply 4800 sets transported in 40’ containers of 800 cartons each best USD78.00 per set 30 days Sight Credit reply here 15th（9）Dec. 15th(incoming):Yours 13th accepted L/C opening by us please send us contract immediately（10）Dec. 16th(outgoing):Yours fifteenth S/C No. 0786335 airmailled

上述来往函电中，哪几则属于发盘？（5分）

水剂清洗剂的配方很多，其中之一为亚硝酸钠1.5～2.5%碳酸钠（），其余为水。

A.0.5～0.7%

B.0.8～1%

C.1～1.5%

D.1.5～1.8%

I live in the country and my father was a farmer.51. ______
He is now forty-five year old. Because of years of 52. ______
hard work, he looks old than his age. When I was53. ______
young, he is used to tell me the importance of study. 54. ______
Father knows little about English and other subjects, 55. ______
but he usually gives me some good advices on how56. ______
to learn my lessons good. He is not only kind to me 57. ______
but also very strict in me. With his help, I’ve made 58. ______
great progress. I’ll never to forget what he taught 59. ______
me. I think my father is best father in the world. 60. ______