关于脑干听觉诱发电位，下列哪一项是错误的A．是声音刺激诱发的短潜伏期电位 B．是声音

关于C1q固相法检测非抗原特异性CIC的原理，下列描述正确的是()

A．是利用循环免疫复合物具有与C1q结合的特性

B．固相包被的是C1q

C．加入的是酶标记二抗

D．根据颜色的深浅来判断免疫复合物的含量

E．该方法结果的稳定性较好

英国整个政治制度的实质是：

A．责任内阁制

B．君主立宪制

C．代议制民主

D．新兴的工业资产阶级

一期愈合是指（）

A.创缘整齐、无感染、缝合后对合严密，愈合时间短，形成瘢痕少的愈合

B.伤口边缘的皮肤及皮下组织向中心移动，创面逐渐缩小的愈合

C.组织缺损较大或伴有感染的伤口，愈合时间较长，形成的瘢痕较大的愈合

D.肉芽组织增生和瘢痕形成的愈合

E.伤口表面的血液、渗出液及坏死物质干燥后，在痂下完成上皮再生的愈合

阅读理解。

     I reached Cairo and took a taxi to Tahrir Square. The taxi dropped me off across the street from

Hardee' s, a fast-food restaurant. In the cold January air, two street children came to me with cries

for food.

As a world traveler, I was used to beggars. But seldom had I been so moved by the sincerity of the

plea (恳求) . I asked them to wait while I went inside to buy them food. Since I was traveling on a

tight budget and was even skipping meals on occasion, part of me identified with the children's hunger.

But mostly, the children reminded me how rich I really was.

     At the counter I ordered two hamburgers for the boys. Then, as the hamburgers were being cooked,

I overcame my remaining stinginess(小气)and bought them one of Hardee' s delicious, big chocolate chip

cookies.

     As they took the hamburgers, they showed me with 30 seconds of nonstop blessings, praying that

Allah would bless me always. After they finished, I reached into the bag and pulled out the cookie,

extending it for them to take. Both boys fell silent, and tears welled up in their eyes as they insisted this

was too much. They refused the cookie six times. On my seventh attempt, after a long silent pause.

they held out their hands and took the cookie.

     The events that night are now in the past, but there are moments when I'm transported back to that

empty square and to the honest faces of two boys. Five years later, I still ask God's blessings for those

two Egyptian boys. While they had nothing material to give, they gave me something greater. an

awareness of my spiritual poverty and a desire for a softer heart.

1. Which of the following serves as the best title for the story?

A. An Unforgettable Trip.

B. Beggars Who Gave.

C. A world Traveler.

D. Food That Was Refused.

2. From the story we know the writer         .

A. paid a visit to Cairo in winter to help the poor

B. bought cookies and coffees for the two boys

C. traveled with chop cookies in his bag occasionally

D. went hungry at times in order to save money

3. Why did the two beggars refuse to accept the cookies at first?

A. They pretended to behave politely.

B. They had eaten too much to have more.

C. They felt content with what they had got.

D. They intended to test the writer's sincerity.

4. Which of the following can best describe the writer?

A. Considerate and generous.

B. Rich but merciless.

C. Brave and thoughtful.

D. Helpful but cautious.

焊丝过细，在焊接时易造成熔合不良。