问答题简答题：简析《朝花夕拾》的人物形象

There are some things humans can go without. We can lose a kidney (肾)or a lung, an arm or two and still live perfectly well. But some fish put us to shame. They can get by without stomachs.

One such fish is the stout longtom（尖嘴魚）. The group it belongs to carries a more appropriate name: the needlefish. All needlefish lack stomachs. Their ancestors had them, but later they were lost.

The stout longtom can reach 1.3 meters in length, and lives near the sea surface. Like all needlefish, it can jump out of the water to escape its enemies. Tropical(热带) fishermen are sometimes injured by needlefish. In 1977, a 10-year-old Hawaiian boy was killed when a needlefish jumped through his brain. The longtom eats smaller fish. Its teeth are not good at cutting fish into pieces, so it swallows fish whole.

Ryan Day from Australia and his colleagues wanted to know how the longtom digests its meaty meals without a stomach, so they ran some chemical tests about the fish.

Day’s results show that the longtom can consume food without the help of a stomach. It uses a special material called trypsin（胰岛素） that can break down proteins without acid — although the approach is less efficient than using a stomach.

Because it’s a meat-eating animal, the longtom gets a lot of protein in its food, so it can afford this slightly less efficient system for absorbing it. Two plant-eating fish that Day studies actually had higher levels of trypsin in their body, as their food was low in protein.

Day thinks that the longtom and its stomachless relatives might actually have arrived at an energy-saving solution. He says that although the stomach is critical to many kinds of animal, the organ is “a fairly expensive organ to run”. This perhaps explains why some animals have got rid of theirs.

小题1:What does the underlined phrase “get by” mean?

A．Live.

B．Fight.

C．Hunt.

D．Recover.小题2:Ryan Day ran the chemical tests in order to find out how the longtom ______.

A．catches smaller fish in the water

B．can jump so high to escape its enemies

C．digests the smaller fish in its body

D．uses acid to break down the protein小题3:What plays a key role in the longtom’s digestion process?

A．Acid

B．Trypsin.

C．The stomach.

D．Protein in its body.小题4:Ryan Day’s results show that ______.

A．the longtom often waste energy

B．the longtom can make acid easily

C．the longtom’s high-protein food helps its unique way of consuming food.

D．meat-eating fish have higher levels of trypsin in their bodies than plant-eating fish

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题型：问答题

有人说，沉默是金，因为祸从口出，许多麻烦运往往因为自己的多嘴，而且沉默还可以表示深沉，表示有城府;有人说，慷概是金，因为在当今社会里，只要你能大方地给，必定能得到丰厚的回报;有人说智慈是金……也许都不错，但我认为，热情、主动才是真正的金，才是自己拥有的金，才是别人无法抢夺的金。

人生不能被动，生活需要主动。只有主动，才能不断地获得上进的机遇;只有主动，才能超越别人;只有主动，才能牢牢地把握胜券。

主动，就是从时间上超前一步，是九点钟要赶到的，你不妨八点五十分赶到，这样你就不用担心搭不上急驶而来的时代列车。

主动，就要从范围上扩大一些，要你了解衬衫，你不妨顺便了解一下西装、领带以及鞋子和帽子，这样你的视野就会开阔，你的回旋余地也就可能更大。

主动，就是从程度上再加深一层，要求知道是什么颜色的，你就深入地琢磨一下：为什么在键盘上这么简单地敲击几下，文字就输入了别的输入方法是不是会更简单。

主动，从动作和态度上力求积极一点儿，敏锐一点儿，当别人尚未意识到时，你已经强烈地意识到了;当别人刚刚起步时，你已经走在途中了;当别人正想找你时，你已敲门进去了……

问题：

试述文章为什么说“主动是金”。

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题型：单项选择题

危机的第一个征兆出现到危机开始造成可感知的损失这个阶段，被称为（）

A.危机开始阶段

B.危机感知阶段

C.危机爆发阶段

D.危机持续阶段

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简析《朝花夕拾》的人物形象

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