The flowers his friend gave him will die unless every day. A.watered B.watering C.water D.to water 题目和参考答案——青夏教育精英家教网—

题目内容

The flowers his friend gave him will die unless ___ every day.

A.watered B.watering

C.water D.to water

解析:

unless后接省略形式。flowers和water之间是关系要用被动语态。同时unless从句的主语与主句的主语相同，常常省略其相同成分，故选A项，表示被动。动词-ing形式表示主动；不定式常用作目的状语。

练习册系列答案

相关题目

Every year on my birthday, from the time I turned twelve, a white gardenia was delivered to my house. No card or note came with it. 1 to the flower shop were always useless---it was a cash 2 . After a while I stopped trying to 3 who the sender was and just delighted in the beautiful and perfume of the white flower. But I never 4 imagining who the sender might be. Some of my 5 moments were spent daydreaming about it.

My mother asked me whether there was someone for whom I had done a(n) 6 kindness who might be showing 7 . Perhaps the neighbor I helped when she was 8 a car full of groceries. Or maybe it was the old man 9 the street whose mail I helped to get during the 10 so he wouldn’t have to venture down his icy step. As a teenager, 11 , I had more fun guessing that it might be a 12 who had noticed me 13 I didn’t know him.

One month before my high school graduation, my father died of a heart attack. He was 14 some of the most important events in my life. I became completely 15 in my upcoming graduation and the dance. When my father died, I 16 the dance and the dress for it. The day before the dance, I found a dress on the sofa. I didn’t 17 if I had a new dress or not, but my mother did.

She wanted her children to feel 18 and lovable, imaginative, believing that there was a 19 in the world and beauty in the face of hard times. Actually mother wanted her children to see themselves much like the gardenia-lovely, 20 and perfect. The gardenia stopped coming when my mother died.

1. A. Calls B. Quarrels C. Messages D. Letters

2. A. service B. deal C. bargain D. offer

3. A .recognize B. imagine C. wonder D. discover

4. A. failed B. stopped C. succeeded D. enjoyed

5. A. saddest B. painful C. happiest D. loneliest

6. A. special B. common C. valuable D. important

7. A. concern B. attitude C. interest D. appreciation

8. A. repairing B. washing C. unloading D. starting

9. A. across B. through C. from D. onto

10.A. spring B. summer C. autumn D. winter

11. A. though B. anyway C. therefore D. indeed

12. A. friend B. superman C. teacher D. boy

13. A .as if B. even though C. in case D. so that

14. A. considering B. expecting C. missing D. preparing

15. A. disappointed B. uninterested C. discouraged D. concentrated

16.A. forgot B. lost C. hated D. expected

17. A. wonder B. believe C. care D. know

18. A. contented B. respected C. thanked D. loved

19. A. trouble B. magic C. tragedy D. comedy

20. A. strong B. beautiful C. smelly D. lucky

Pieter Hoff retired from the flower export business seven years ago. Now, he is trying to help people grow trees and plants in the desert—and save water.

In many places, much of the freshwater supply is used for irrigation. Yet most of that water may be lost through evaporation(蒸发) into the air. So Pieter Hoff has invented a simple plastic device called the Groasis Waterboxx. He says “If you look at nature, and I give an example, if you look to the Rocky Mountains, you find trees all over the mountains. So trees are actually able to grow on rocks. They have very strong roots. ”

He says the trick is that nature does not dig a hole like we humans do to plant seeds. Nature plants the seeds through birds or animals on top of the soil. Their waste then acts as a cover. It prevents the humidity(湿度) in the soil from evaporating. The Dutch inventor says he is simply copying that system.

Some people call the Waterboxx a water battery. The cover has deep ridges. These collect rainwater. But the device is designed to collect water even when there is no rain. The cover gets cold during the night and creates condensation(凝结).

The water is collected through two holes through which water is carried to the soil. Pieter Hoff says the nice thing is that, once collected, the water is not able to evaporate anymore.

The roots of the plant may have to grow several meters deep to reach groundwater. Once growth is established, the box can be removed and used to start another planting.

Pieter Hoff says he is now doing experiments with twenty thousand Waterboxxes in countries including Pakistan, Ecuador and the United States. The reusable box now sells for about fifteen dollars.

64. The reason why Pieter Hoff invented the Groasis Waterboxx is probably that he tried to _______ .

A. solve the problem of evaporation

B. provide freshwater in the desert

C. do experiments with the Waterboxx

D. irrigate more trees and flowers

65. Pieter Hoff got his idea of inventing Groasis Waterboxx by _______ .

A. doing the flower export business

B. carrying fresh water for irrigation

C. studying the system of nature’s planting seeds

D. collecting water when there’s no rain

66. According to Paragraphs 2 and 3, Pieter Hoff actually means _______ .

A. you can find trees on the Rocky Mountains

B. most fresh water is used to water plants

C. nature can save water by itself

D. humans dig holes to plant seeds

67. According to the passage, we can infer the Waterboxx _______ .

A. is needed before the roots of plants come out

B. cannot create condensation through its cover

C. sells well in many countries

D. can only be used once

It was starting to get dark and Bobby turned to walk home when suddenly his eyes caught the setting sun’s rays reflecting off something along the roadside. He reached down and discovered a shiny dime(一角钱). Never before has anyone felt so wealthy as Bobby felt at that moment.
As he held his new found treasure, a warmth spread throughout his entire body and he walked into the first store he saw.
His excitement quickly turned cold when the salesperson told him that he couldn’t buy anything with only a dime.
He saw a flower shop and went inside to wait in line. When the shop owner asked if he could help him, Bobby presented the dime and asked if he could buy one flower for his mother’s Christmas gift. The shop owner looked at Bobby and his ten cents offering. Then he said to him, “You just wait here and I’ll see what I can do for you.”
The sound of the door closed as the last customer left. All alone in the shop, Bobby began to feel cold and afraid. Suddenly the shop owner came out. There, before Bobby’s eyes, lay twelve long stem, red roses, with leaves of green and tiny white flowers all tied together with a big silver bow. Bobby’s heart sank as the owner picked them up and placed them gently into a long white box. “That will be ten cents, young man.” The shop owner said reaching out his hand for the dime.
Sensing the boy’s reluctance(勉强), the shop owner added, “I just happened to have some roses on sale for ten cents a dozen. Would you like them?”
When the man placed the long box into his hands, he knew it was true. Walking out of the door that the owner was holding, Bobby heard the shopkeeper say, “Merry Christmas, son.”
【小题1】Bobby feel that he was rich?

A．Because he found a purse with many dollars

B．Becau

se he found some money on the way home.

C．Because he was given a bunch of flowers

D．Because he found some hidden treasure.[来源:学科网ZXXK][来源:学+科+网Z+X+X+K]

【小题2】What can we infer from the third paragraph?

A．Christmas gifts were always very expensive

B．The salesperson’s words greatly disappointed Bobby.

C．Bobby was tired of trying one shop after another

D．The salesperson was trying to cheat Bobby.

【小题3】While waiting for the shop owner in the flower ship, Bobby .

A．was full of excitement and joy

B．was very thankful to the shop owner

C．felt he had been cheated by the owner

D．was not sure whether the owner would accept his offering

It is well known that ____ the flower is to grow,____the price is in the market.

A. harder; higher B. the harder; the higher

C. the more hard ; the more high D. more harder ; more high

请认真阅读下列短文，并根据所读内容在文章后表格中的空格里填入一个最恰当的单词。

注意：请将答案写在答题卡上相应题号的横线上。每个空格只填1个单词。

Color use in nature

Nature is very colorful, full of different hues（色调）that delight the eye. What makes these colors and why do they exist?

Causes of Colors in Nature

Colors in nature are formed in two ways. Pigments, like the melanin in skin and many animal furs, produce most blacks, browns, reds and yellows. Most plants are green due to chlorophyll（叶绿素）. Other colors are caused by structure, like many greens, blues, and whites. Blue bird’s feathers actually contain black pigment, but their structure causes them to appear blue. The scattering of light by tiny dust particles in the air, viewed against the black background of space, makes the sky look blue too.

Color Use in Plants

Color has a great effect on the survival of plants and animals. Flowers have bright hues and patterns to attract insects. These insects move from one flower to another, making sure seeds are produced. Bees can see colors we cannot, i.e. ultraviolet, and follow these patterns of stripes or dots to the inside of the flower.

Not only flowers but also fruits use color for the good of the plant. An unripe fruit mixes in with the leaves, but ripe berries contrast, becoming more appealing to the creatures who eat them. Birds are especially drawn to red fruit, and in turn help the plant by broadcasting its seeds.

Camouflage（伪装）in Nature

Many colors and patterns camouflage animals who want to avoid enemies. Some animals have damaging shapes to break up their outline, so an enemy will not recognize them. The eye, a very recognizable animal characteristic, is often disguised by a black stripe or patch. Light color below makes up for the shadow on the underside of many fish, amphibians and mammals.

Some animals even change colors to better camouflage themselves, seasonally like the snowshoe hare.

Warning Coloration and Mimicry（动态伪装）

Warning colors make an animal more visible rather than hidden. These usually indicate a negative aspect of the animal, like the bad taste of a monarch butterfly, smelly smell or painful bite of a bee. Usually black and a contrasting color (white, yellow, orange or red) form a striking pattern in these creatures, and frighten their enemies away. Nature is tricky, though, and sometimes harmless creatures pretend the patterns of harmful ones to scare off animals living on meat too.

Social Coloration in Nature

Sometimes coloration is important socially. Male birds, typically more colorful, defend their territories and attract females. Eggs may use color and pattern to remain hidden. When they hatch, parents feed the nestlings when they see the bright pattern in their gaping mouths.

Taking a closer look at nature throws light on how color is used in marvelous ways!

Color use in nature
___1.____ for colors in nature	Many colors are caused by 2. which produce most blacks, browns, reds and yellows.
Other colors exist due to 3. , like blue bird’s feathers, which appear blue but actually contain black pigment.
Color use in Plants	Flowers have bright hues and patterns to attract insects, and then insects’ moving from one flower to another makes seeds 4. .
Fruits use colors, ripe color for example, to protect and help 5. .
Color use in animals	Colors help many animals 6. their killers. For example, damaging shapes can break up their outline, so an enemy will not recognize them.
Some animals, like snowshoe hares, 7. change colors to camouflage them.
Using warning colors to make themselves more8. , thus frightening their enemies away.
Harmless creatures 9. to be those harmful ones to scare off their enemies.
Social use in nature	Animals use colors to defend their territories and attract the 10. sex.

试题分类