发包人在（）合同中承担的风险最小。 A.可调总价 B.不可调总价 C.单价

Once there was a poor woman. She lived by herself in a little house in a village. She didn’t have much money_ 36_ she was very kind and happy.

One day a young man named Smith came to her door. He was a little thin and tall. He was very _37_ and asked the old woman for help.

The old woman said,“Come in and have dinner with me, but I only have _38_.” They had dinner together. After dinner, the old woman told Smith to _39_ some potatoes with him. He _40_ her and then left.

Ten years later, Smith came back to the old woman’s door again and _41_ her a bag of money. She was very _42_.

Smith said, “Ten years ago you gave me some potatoes. I _43_ some potato plants . From those plants, I grew some more plants. Now I am a _44_ farmer because I have enough money to live, but I never_45_ how kind you are to me.”

小题1:A. so              B. or              C. but

小题2:A. full             B. hungry          C. tired

小题3:A. potatoes         B. meat            C. apples

小题4:A. take            B. buy             C. plant

小题5:A. thanked         B. helped           C. loved

小题6:A. threw           B. asked            C. gave

小题7:A. interested       B. sad              C. surprised

小题8:A. ate             B. grew             C. found

小题9:A. busy            B. happy            C. rich

小题10:A talked           B. forget             C. wrote

用计算器求三角函数值（精确到0.001）。

（1）sin23°＝（    ）；

（2）tan54°53′40″＝（    ）。

--When did you go to bed last night?  

--I didn't go to bed _____my father got home.  [ ]

A. until    

B. while  

C. after

为什么要把变频器与其他控制部分分区安装？

柜员登陆网上银行内管系统为客户签约时，使用（）交易进行签约注册。

A.1581

B.1580

C.1585