滤膜•氟离子选择电极法测定环境空气中氟化物含量时，每批醋酸纤维滤膜都应做空白实验，并

阅读理解。

     One day a man saw an old lady standing by her expensive car, clearly in need of help. So he stopped his

old truck and got out. Although he was smiling, the old lady was worried. Was he gong to hurt her? He didn't

look safe.

     The man could see that she was frightened, so in his friendliest voice he said,"I'm here to help you,

madam. Why don't you wait in the car where it's warm? By the way, my name is Bryan Anderson." Bryan

quickly fixed the car and the lady thanked him. Then she asked how much she should pay him.

     But Bryan wanted no money. He was just giving a hand to someone in trouble. This was normal for him.

He said, "If you really want to repay me, next time you see someone in need, help them and think of me."

    After saying goodbye, the lady continued down the road until she reached a small café where she decided

to stop for something to eat. As the pretty waitress took her order, the lady noticed she was nearly eight

months pregnant (怀孕). Although the waitress looked tired she was very kind. As the lady was going to pay

the $10 bill she remembered Bryan's words.

    She paid with a hundred-dollar bill. But when the waitress returned with the change the lady was gone.

On the table she saw a small note. There ware tears in her eyes when she read it: "Somebody once helped me

the way I'm helping you. If you want to pay me back, continue being kind to others." Under the note were

nine more $100 bills.

    Was the old lady an angel? The waitress was so excited that she called her husband to tell him the news.

"Bryan Anderson my dear…you're not going to believe what just happened…"

1. When the lady saw Bryan, she was worried because she thought _______.

A. he may hurt her

B. he wasn't going to stop

C. he couldn't help her

D. she didn't have enough money

2. What can we learn about the old lady from the story?

A. She was never kind to others.

B. She was usually quite careless.

C. She was probably very rich.

D. She was not a very good driver.

3. The underlined expression "giving a hand to (Paragraph 3) is closest in meaning to "_______".

A. questioning

B. helping

C. hurting

D. calling

4. The underlined word "it" (Paragraph 5) refers to "_______".

A. the change

B. the bill

C. the note

D. the order

5. Which of the following shows the relationship between the man, the lady and the waitress?

在办理土地征用时，同各级政府、村镇进行协调所发生的协调费用应在（）中综合考虑。

A.土地征用费

B.迁移补偿费

C.项目法人管理费

D.前期工作费

某同学利用传感器研究物体的运动，他使物块以一定的初速度沿斜面向上滑行，利用传感器实验系统在计算机屏幕上得到其速度大小随时间的变化关系图象如图所示。g取10m/s²，忽略空气阻力的作用，下列选项是该同学根据图象得到的结论，其中正确的是（    ）

A．物块上滑的加速度大小为8m/s²

B．物块下滑的加速度大小为1m/s²

C．物块向上滑行的最大距离为1m

D．斜面的倾角为60°

“人类心理发展规律受社会文化历史发展规律制约”的观点的提出者是（）。

A．鲁宾斯坦　

B．皮亚杰　

C．乔姆斯基　

D．维果斯基

试述种子入稟条件和贮藏期间库房管理。