腰椎穿刺脑脊液检查是诊断蛛网膜下隙出血的重要依据，对发病早期患者脑脊液的描述正确的是

在平面直角坐标系内，直线l₁：x-2ay+1=0和直线l₂：2ax+y-1=0（a∈R）的关系是（　　）

A．互相平行

B．互相垂直

C．关于原点对称

D．关于直线y=-x对称

Fill in the blanks with the right forms of the given words. 用所给单词的适当形式填空。

1. I              (swim)  in the lake last summer. 

2. "Thank you for your gift." says Danny             (happy). 

3. Lynn wants you               (remember) China. 

4. How many                (person) can you see ? 

5. Did you remember              (go) to the park ? 

6. I like playing               (sport) very much.

7. Jenny              (lie) on the beach now. 

8. Some people               (be)  on the bus. 

9. Do you need               (eat) breakfast ? 

10. Lynn               (brush) her teeth every day.

Picking tomatoes

For as long as I can remember, Grandma’s plentiful tomato garden has been a sign of summer’s end. Each September, just as the decreased heat of the sun suggests cooler days, Grandma requests my help in her tomato garden. She convinces me she cannot pick tomatoes without my youthful eyes and quick mind. She says we need to examine each tomato and agree on its readiness for picking. While Grandma’s request for my help in the tomato garden is always the same, her desire for my help seems to increase each year.

Grandma has eyes for finding even the tomatoes hidden by undergrowth and other tomatoes. I, however, just turn circles looking for the ones I think Grandma will like. I spot what looks like a ripe tomato, head in its direction, and then get sidetracked by another that appears to be equally ripe. I usually end up watching Grandma and trying to stay out of her way, which seems the only way my eyes and mind ale useful.

There we are, lost in the tomato vines（藤）. Grandma’s eyes are always knowing, and they are no different in the vegetable garden. From afar she spots what looks like a ripe tomato. As she walks toward the garden, she evaluates the tomato for a second time. but from a different angle. I already know it will end up in the basket with the pile of others Grandma has carefully chosen. However, Grandma acts as if she needs a final look to be sure. She calls me to her side, kneels beside the vine while enjoying the warmth of the fading sunlight on her face, and grasps the tomato in her hand. She turns each round, red ball toward the sunlight before disconnecting it from thevine with a half-hearted smile.

She then looks at me. I nod my head and smile. Grandma assumes I smile in agreement with her tomato selection. I know I smile, instead, at her.

小题1:Why does Grandma ask the author to go to the tomato garden with her?

A．He can help pick more tomatoes.

B．He can learn the hardship of labor.

C．She enjoys staying with him while working.

D．She tries to share the happiness of harvest with him.小题2:The second paragraph shows that the author   .

A．is an inefficient tomato picker

B．really has youthful eyes and quick mind

C．has spent a lot of time gardening with Grandma

D．is a naughty child trying to be out of Grandma’s sight小题3:In the last paragraph, the author smiled to Grandma because he   .

A．realizes her true intentions

B．feels very happy to pick tomatoes for her

C．confirms that her choice of tomato is great

D．appreciates her skill in finding ripe tomatoes小题4:What can we infer from the story?

A．The grandchild will become more skillful at gardening than Grandma.

B．Grandma will develop more patience in working with the grandchild.

C．The grandchild will gradually become more independent of Grandma.

D．Grandma’s need for the grandchild's company will grow over time.

某数字图书馆将国家图书馆的馆藏图书制作成数据库在互联网上供有偿阅读，则该图书馆没有侵犯的权利是：

A．图书作者的复制权

B．图书作者的发表权

C．图书作者的网络传播权

D．图书作者的保护作品完整权

泰纳认为文艺创作取决于（）、（）、环境三种力量。