如图所示，轻绳OA一端系在天花板上，与竖直线夹角37°，轻绳OB水平，一端系在墙

完形填空。

It was Christmas. I was teaching in a small town where my twenty-seven third graders excitedly expected the great day of gift-giving in a couple of days.      Each day the children produced some new  1  -Christmas cards, handmade gifts, German bells and so on. Through it all she remained alone,  2  from far away. I wondered what would happen to this quiet child, once so happy, now suddenly so quiet. I hoped the festivities would please her. But nothing did. The students made the fried marbles (small balls, made of glass or stone) and competed with one another to bring the  3  ones.      The day of gift-giving finally came. We cheered over our handiwork as the presents were  4 . All along, she sat quietly, watching. To see her smile, I had made a special bag for her. She opened it so slowly and carefully. I waited but she  5 . After school I sat down in a chair, hardly knew what was happening, when she came to me with out-stretched hands, holding a small white box that looked a little old, as if it had been  6  many times by unknown, childish hands. She said nothing."For me?" I asked. She said not a word, but   7   her head. I took the box and carefully opened it. There inside, shining green, a fried marble hung from a golden chain. Then I looked into that eight-year-old  8  and saw the question in her dark brown eyes.   9  I knew-she had made it for her mother, who had died just three weeks before and would never hold her or brush her hair or  10  her childish joys or sorrows.      I meant  11  when I said in a low voice, "Oh, Maria, it is so beautiful. Your mother would love it." Neither of us could stop the tears. She threw herself into my arms and we cried together. And for that moment I became her mother, for she had given me the greatest  12  of all: her trust and love.

( )1. A. candles     ( )2. A. preparing  ( )3. A. prettiest  ( )4. A. mentioned  ( )5. A. gave away  ( )6. A. afforded   ( )7. A. nodded     ( )8. A. face      ( )9. A. Certainly ( )10. A. appear   ( )11. A. her      ( )12. A. joy       B. cakes    B. playing    B. wisest     B. advised   B. threw away B. touched   B. raised     B. hands     B. Suddenly  B. enjoy     B. myself     B. promise                C. wonders     C. searching    C. heaviest     C. exchanged    C. carried away C. disturbed   C. lowered     C. hair       C. Generally   C. share       C. us         C. gift     D. cheese       D. watching     D. cleverest    D. achieved       D. turned away   D. realized    D. dropped      D. head         D. Hopefully      D. reply                                     D. it            D. wish

本题共两小题（20分）

（1）（4分）如图所示，游标卡尺的读数为                cm。

（2）某同学在做“探究弹力和弹簧伸长的关系”的实验时，所用实验装置如图所示，所得的测量数据如下表所示（一个钩码的质量）。

钩码个数	0	1	2	3	4	5
弹簧长度／cm	40.00	42.02	43.96	46.02	47.21	50.00

       ①（4分）请在坐标纸中建立坐标系，画出弹力F与弹簧伸长量的关系图象（要求明确写出坐标轴代表的物理量和单位）。由图可知该弹簧的劲度系数   N/m

②（2分）如果弹簧受到的拉力F=5.0N时，仍在弹簧的弹性限度内，则弹簧的长度为         cm.

（3）①（6分）在《验证力的平行四边形定则》的实验中，如图所示在水平放置的木反上垫上一张白纸，把橡皮条的一端固定在板上的A点，橡皮条的另一端拴上两个细绳套。先用两个弹簧秤钩住细绳套，互成角度拉橡皮条使之伸长，将结点拉到某一位置O，此时需记下      、        、        ；再用一个弹簧秤钩住细绳套把橡皮条拉长，将结点位置拉到        ，记下        、        。

②（4分）下列关于本实验的说法中，正确的是      

A．拉橡皮条的细绳套长一些较好

B．F₁和F₂之间的夹角越大越好

C．若实验中作出F和F′的图示不完全重合，则证明力的平行四边形定则是不完全正确的

D．若F₁和F₂的方向不变而大小都增大1N，则合力方向不变，大小也增大1N

在FeCl₃、CuCl₂混合溶液中，加入一定量的铁屑，反应完全后将固体滤出，下列说法中正确的是(　　)

A．若滤出的固体中只有铜，则溶液中一定含有的阳离子是Fe^2＋，一定不含Cu^2＋

B．若滤出的固体中只有铜，则溶液中一定含有的阳离子是Fe^2＋，可能含有Cu^2＋和Fe^3＋

C．若滤出的固体中只有铜，则溶液中一定含有的阳离子是Fe^3＋和Fe^2＋，一定不含Cu^2＋

D．若滤出的固体中含有铁和铜，则溶液中一定含有的阳离子是Fe^2＋，一定不含Cu^2＋和Fe^3＋

由国家统一制定，各地不得调整的是（）

A.《国家基本医疗保险药品目录》中的西药和中成药

B.《国家基本医疗保险药品目录》中的中药饮片

C.《国家基本医疗保险药品目录》中的甲类药品

D.《国家基本医疗保险药品目录》中的乙类药品

E.《国家基本药物目录》

一般说来，一国国际收支出现逆差会使（）。

A.货币坚挺

B.货币疲软

C.物价下跌

D.通货紧缩