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问题 单项选择题 A1/A2型题

关于再生下列可能发生的是（）。

A.一侧肾脏摘除后，另一侧肾脏体积增大

B.胃肠道黏膜缺损后由表层上皮增生修补

C.神经细胞通过脱髓鞘后再生

D.分化低的组织再生能力强

E.横纹肌损伤均不能再生

答案

参考答案：D

解析：一侧肾脏摘除后，另一侧肾脏体积增大属代偿性肥大；胃肠道黏膜被覆上皮缺损后由邻近基底部细胞分裂增生修补，而非表层上皮；神经细胞损伤后不能再生，神经纤维通过脱髓鞘后再生；横纹肌细胞的损伤未破坏肌膜时可再生，恢复正常结构，若肌膜破坏，则难以再生，而通过瘢痕修复。一般来说低等动物比高等动物的再生能力强，分化低的组织比分化高的强。

多选题

振源O产生横波在纸面内向四周传播，传播的速度大小为10m/s．当振源起振后经过时间1s，A点起振，又经过2s，B点起振，此后A、B两点的振动方向始终相反（周期T＞2s），则下列说法正确的是（　　）

A．A、B两点的起振方向相同

B．OB与OA距离之差为一个波长

C．这列横波的波长为40m

D．这列横波传播的周期为8s
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问答题

(1) The word "addiction" usually makes you think of alcohol or drugs, but in modern-day society we are seeing some new kinds of addictions. Some people are compulsive (难以自制的) shoppers. Others find it impossible to pull themselves away from their work. Still others spend countless hours watching TV or playing computer games.
(2) Over the years, shopping has become a very common activity. Many people enjoy going to stores more and more every day, but it’s more than a common hobby for some of them. They have turned into shopaholics. They are people who simple enjoy shopping and walking around spending money without being able to stop doing it. They are hooked on shopping and usually buy things that they don’t need. Even though they don’t have enough money, they buy everything they want.
(3) The question is, why do they have this addiction There isn’t a specific answer. Some people go shopping when they are sad, worried, upset or lonely, and they want to feel better. They use this activity as a way to forget their problems. Shopaholics say that they feel more important and better after they buy something. They also tend to have this addiction when they feel guilty.
(4) Shopaholism seems to be a harmless addiction, but it can ______. Some of them can be psychological. If this is the case, people addicted to shopping should go to a support group to help them break this habit. However, the process, like for most addictions, is long, and they suffer a lot. It can also cause financial problems. They just think about satisfying their feelings, so they spend money they don’t have. They get deep in debt, and they can even go bankrupt and get sent to prison.

What’s the main idea of Paragraph 3 ( Please answer within 8 words)
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