右图是著名漫画家张乐平于1958年画的《跃！跃！跃！》。 它反映了（） A．当时

We will lose the game unless he _____ us. [ ]

A. helps

B. helped

C. was helping

D. has helped

读图，回答下列各题。

小题1:从成因上看，世界最高山峰与世界最深海沟都位于（    ）

A．两大板块的消亡边界

B．两个大陆板块交界处

C．两个大洋板块交界处

D．板块的内部小题2:分析图中信息可知（    ）

A．全球陆地面积约为海洋面积的30%

B．全球陆地近一半海拔在大陆平均值内

C．海洋平均深度数值远远大于大陆平均海拔数值

D．大陆架的海水深度是全球海水平均深度的1/2

延长在一地的旅游活动日程，地陪应怎样办理？

达州市渠县境内含有丰富的深层地下食盐资源，食盐是日常生活中的必需品，也是重要的化工原料．

（1）经测定该县深层地下粗盐中含有少量K⁺、Ca²⁺、Mg²⁺、Fe³⁺等杂质离子，某研究性学习小组在实验室提纯NaCl的流程如下：

所提供的试剂：饱和Na₂CO₃溶液、饱和K₂CO₃溶液、NaOH溶液、BaCl₂溶液、Ba（NO₃）₂溶液、75%乙醇溶液、CCl₄，仪器及用品自选．

①欲除去溶液中的Ca²⁺、Mg²⁺、Fe³⁺、SO₄^2-，选出a操作中所代表的试剂，按滴加顺序依次为______（只填化学式），b步操作的名称是______．

②洗涤除去NaCl晶体表面附带的少量KCl，应选用试剂是______，用PH试纸测定滤液ⅡPH值的方法是______．

（2）用提纯的NaCl配制500mL，2.5mol•L^-1的NaCl溶液，所需仪器除烧杯，托盘天平（砝码和镊子），药匙，玻璃棒外，还需要______（填仪器名称），应称取NaCl______g

（3）下列操作会导致所配NaCl溶液浓度偏高的是______

A、定容完毕后，盖塞，摇匀，再将容量瓶置于实验台上，发现液面低于刻度线，再添加蒸馏水至刻度线．

B、未将洗涤烧杯内壁的溶液转入容量瓶．     C、定容时，俯视刻度线．

D、转移溶液之前，容量瓶内有少量蒸馏水．   E、称量时，天平指针指向左盘．

There are many kinds of friends. Some are always (1) you, but don’t understand you. Some say only a few words to you, but understand you. Many people will step in your life, but only (2) friends leave footprints.
I shall always recall the autumn and the girl with the (3) . She will always bring back the friendship between us. I know she will always be my best friend.
It was the golden season. I could see the yellow leaves (4) with the cool (5) . In such a season, I liked walking alone on the roads covered with leaves, (6) to the sound of them.
Autumn is a (7) season and life is uninteresting. The free days always get me (8) . But one day, the sound of a violin (9) into my ears like a stream flowing in the mountains. I was so surprised that I jumped to see what it was. A young girl, standing in the wind, was (10) in playing her violin.
I had (11) seen her before. The music was so nice that I listened quietly. Lost in the music, I didn’t know that I had been (12) there for so long but my existence did not seem to disturb her.
Leaves were still falling. Every day she played the violin at the comer of the building (13) I went downstairs to watch her performance. I was the only listener. The autumn seemed no longer lonely and life became (14) . (15) we didn’t know each other, I thought we were already good friends. I believe she also loved me.
Autumn was nearly over. One day, when I was listening carefully, the sound suddenly (16) . To my astonishment, the girl came over to me.
"You must like music from the violin." she said.
"Yes. And you play very well. Why did you stop’." I asked.
Suddenly, a (17) expression appeared on her face and I could feel something unusual.
"I came here to see my grandmother, but now I must leave. I once played very badly. It was your listening every day that (18) me. " she said.
"In fact, it was your playing (19) gave me a meaningful autumn," I answered, " Let’s be friends. "
The girl smiled, and so did I. I never heard her play again in my life. I no longer went downstairs to listen to her. Only thick leaves were left behind. But I will always remember the fine figure of the girl. She is like a (20) —so short, so bright, like a shooting star giving off so much light that makes the autumn beautiful.

Ⅱ. 完形填空/Close

A．waiting

B．stopping

C．standing

D．hearing