问题 解答题

将下列动物类型与主要特征连线:

①腔肠动物        A.体表有坚硬的甲

②软体动物        B.体表有外骨骼,足和触角分节

③甲壳动物        C.身体由许多相似的体节构成

④环节动物        D.身体柔软,有贝壳或内壳

⑤节肢动物        E.结构简单,有口无肛门.

答案

腔肠动物的主要特征是:生活在水中,结构简单,体壁由内胚层、外胚层和中胶层构成,体内有消化腔,有口无肛门.

    软体动物的主要特征:身体柔软,具有坚硬的贝壳,有的贝壳退化,身体藏在壳中,藉以获得保护,由于贝壳会妨碍活动,所以它们的行动都相当缓慢;不分节,可区分为头、足、内脏团三部分,体外被套膜,常常分泌有贝壳.足的形状各具特色,如河蚌的斧足,蜗牛的腹足,乌贼的腕足等.

   甲壳动物的体表有较硬的甲,背部没有脊柱属于无脊椎动物,生活在水中,用鳃呼吸,身体分为头胸部和腹部.

   节肢动物的主要特征是身体由许多体节构成,体表有外骨骼,足和触角分节.

   环节动物的主要特征有身体细长,由许多体节构成,真体腔,有刚毛或疣足.

故答案为:

阅读理解

More Chinese are seeking out the surgeon’s knife to improve their looks.Yet the tragic death of the former Super Girl Wang Bei has made people aware of the risks of cosmetic surgery, which is becoming increasingly popular.  Wang Bei,24,is said to have gone under the knife in Wuhan,to jump-start her stage-show career. It seems that the ambitious singer has finally achieved the fame and influence after her death.

For years Miss Lu expected a plastic surgery to make her jaw fashionable narrow and her face smaller. She finally decided against it after hearing of the death of Wang Bei. "Wang Bei’s death rang the warning bell for me,"Miss Lu said in her blog." It was frightening and I gave up the plan. "

A common thread of online discussion is why someone considered beautiful was so dissatisfied with her looks. Some netizens said Wang was a victim of society’s impractical standard of beauty:double eyelids,and the pointed chin typical of Western actresses. Others said her death indicated the limits to which people would go to achieve fame and fortune.

Last year 15 billion yuan was spent on cosmetic surgery and the figure is expected to rise  20% annually. The International Society of Plastic Surgery ranks China first in Asia in terms of the number of cosmetic surgeries in 2009. Worldwide, China is third, after Brazil, while the United States is first.

Nowadays,people are living longer and better. But the effect of aging off their appearance affects their mood and confidence. Many older women want to look young and beautiful. Young people, on the other hand, see cosmetic surgery as the key to wealth and love. "They want to improve their appearance to find better opportunities at work and in marriage,"says a famous plastic surgeon. "We’re living in a highly competitive society. People regard appearance as a weapon in life battle. Those who are young and naturally good-looking tell me,‘I don’t care how much I spend. Just make me look more beautiful.’ "

Advice from a surgeon and psychologist:

1.Choose regular, qualified hospitals with a good reputation.

2.Try to find an expert surgeon who will not suggest several operations over time.

3.Don’t expect too much from changing your appearance. Safety should be the first.

4.Have a realistic understanding of the risks of the surgery (death,injury and failure)and make a balanced decision.

小题1:What’s the influence of Wang Bei’s death on the public?

A.People will feel alarmed at cosmetic surgery.

B.Young people will have no interest in beauty.

C.Doctors will be afraid to perform operations.

D.No one will dream of becoming a Super Girl.小题2:It is mentioned in the passage that________.

A.Miss Lu’s face is narrow and small

B.Wang Bei is a victim of the Internet

C.all Westerners have the pointed chin

D.the US ranks first in cosmetic surgery小题3:What’s the main idea of the 5th paragraph?

A.People are living 1onger and better nowadays.

B.People are living in a highly competitive society.

C.Social competition leads females to seek beauty.

D.Cosmetic surgery is the key to wealth and love.小题4:According to a surgeon and psychologist,it is better to________.

A.change your appearance sooner

B.make a reasonable decision

C.do several operations over time

D.try some different hospitals

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