If you plant watermelon seeds in the spring, ...

If you plant watermelon seeds in the spring，you ________ fresh watermelon in the fall.(2010·浙江)

A．eat　 B．would eat

C．have eaten　 D．will be eating

高三英语单项填空中等难度题查看答案及解析

If you plant watermelon seeds in the spring, you ________ fresh watermelon in the fall.

A．eat                         B．would eat

C．have eaten              D．will be eating

高三英语单项填空中等难度题查看答案及解析

ff you plant watermelon seeds in the spring, you __ fresh watermelon in the fall.

A. eat             B. would eat           C. have eaten          D. will be eating

高三英语单项填空简单题查看答案及解析

86. In the following spring , the seeds should be knocked _______ the seed-heads and sown .

高三英语单项填空简单题查看答案及解析

Britain’s seed bank, the only one in the world aiming to collect all of the planet’s wild plant species, has reached its goal of banking 10 percent by 2010.

The Millennium Seed Bank Project, run by Kew Gardens—one of the oldest botanical gardens—will officially deposit the 24,200th species on Thursday, a pink, wild banana from China.

More than 50 countries are now on board with Kew's giant task but vast places of the globe, including India and Brazil, still need to join in and donate seeds, director Paul Smith said.

The seed bank is one of the largest and most diverse in the world with more than 1.5 billion seeds. Its goal is to help protect the planet’s bio-diversity during a time of climate change.

The wild banana seed is under threat of extinction(灭绝) in southwest China from agricultural development. It is a vital food source for Asian elephants and important for growing bananas for human consumption.

Stored at minus-20 degrees centigrade, so they can last for thousands of years, the seeds await the day that scientists hope never comes—when the species no longer exist in the wild.

It is a race against time, Smith said, because in the last decade alone, 20 plants held in the bank have already been wiped out in the wild. He estimates that between a third and a quarter will become extinct this century.

"It is urgent and it is happening now. An area, the size of England, is cleared of primary vegetation（植被）every year." Smith said.

Because most of the world's food and medicines come from nature, protecting wild plant species is quite important, scientists say. There are already many other seed banks safeguarding food crops, which only account for 0.6 percent of plant diversity.

For Kew's next goal—to collect a quarter of wild varieties by 2020—the botanists need 10 million pounds a year, or a further 100 million pounds on top of the 40 million they have already been granted.

1.What’s the final purpose of the Britain’s seed bank?

A. To collect enough money for the project.  B. To safeguard food crops.

C. To protect wild plants from extinction.        D. To help scientists study wild plants.

2.The wild banana seed in China is in danger because of _______.

A. the expanding of farming work           B. the climate change in this area

C. the large number of Asian elephants       D. human’s large consumption

3. We can learn from the passage that _______.

A. the seeds in the bank can be used now and then all over the world

B. India and Brazil haven’t joined in the Seed Bank Project at present

C. there is only one seed bank in the world at present

D. the wild plants in places like India and China will never die out

4. What does the underlined word “it” in paragraph 7 refer to?

A. The extinction of plant species.           B. The Millennium Seed Bank Project.

C. Britain’s seed bank.                      D. Kew Gardens’ next goal.

5.Which of the following information isn’t mentioned in the passage?

A. The global partnership of collecting wild plant species.

B. The temperature condition of the conservative wild plant species.

C. The government’s financial support for the seed bank project.

D. Scientists’ concern on the extinct wild plant species.

高三英语阅读理解中等难度题查看答案及解析

When we plant a rose seed in the earth,we notice it is small,but we do not criticize it as "rootlees and stemless".We treat it as a seed, 1. （give）it the water and nourishment required　 2.　 a seed.

When it first　 3. （shoot up）out of the earth,we don't condemn（指责）it as　 4. （mature） and underdeveloped, 5.　 do we criticize the buds for not being open when they appear.We stand in wonder at the process　 6. （take） place,and give the plant the care it needs at each stage of its development.

The rose is a rose from the time it is a seed to the time it dies.Within it,at all times,it contains its whole potential.It seems to be　 7. （constant） in the process of change:Yet at each state,at each moment,it is perfectly all right as　 8. it is.

A flower is not 9. （good）when it blooms than when it is merely a bud;at each stage it is10.same thing---a flower in the process of expressing its potential.

高三英语短文填空中等难度题查看答案及解析

If you go out to the fields at night in spring or summer, you can hear frogs singing 1.__ (joy) here and there. It seems as if they were performing a field symphony.

The frog is a good and useful creature that benefits human beings. They can catch fast-moving insects. Each frog eats a large number of pests that are harmful _2.__ crops. This little creature is regarded __3._ “the natural enemy of pests”．

4._ now frogs are getting fewer and fewer. This is because they are killed and put on the table as a delicious dish by their chief enemy, human beings. It is __5.__ shameless and cruel act, isn’ t it？_6._ cause responsible for the rapid reduction of frogs is that farmers use insecticides (杀虫剂) to kill pests and frogs get killed as a result of drinking poisoned water __7._ eating poison-killed insects.

Something must be done without delay _8._(save) frogs. If we don’t punish those __9._ sell and kill frogs to make money, then one day all of us __10.__(punish) by nature for failing to keep the balance of nature.

高三英语其他题中等难度题查看答案及解析

In spring, you may have seen white foam(泡沫) on a green tree or other plants. As a matter of fact, the foam is where young spittlebugs(吹沫虫) live. These insects are protected by the foam, and they usually don’t do much harm to the plants.

As we all know, in late summer, a mother spittlebug lays her eggs on the plant. The babies will hatch(孵化) in spring. After they come to the new world, they begin to eat juice from the plant. The babies eat more juice than their bodies need for food. The extra juice mixes with a special waste that the spittlebugs produce. When this fluid(液体) is released, it mixes with the air, forming bubbly foam.

What is so great about having a foam home? The space inside is so wet that it can keep the bugs’ soft bodies from drying out. And the foam tastes bad, so it keeps away most animals that would eat the bugs. Some birds will reach their heads through the foam to find the bugs. Wasps and ants might eat them, too. But most of the bugs stay safe inside the foam.

Once the bugs have grown into adults, they stop making foam. They leave their homes and jump from plant to plant in search of food. The adults look a little like tiny frogs. For this reason they are also called froghoppers.

If you see some foam on a plant, you might want to take a careful look inside. Gently push some of the foam aside with a small stick. Deep inside you may see a few insects eating plant juice. They might also be making more foam. Be sure to push the foam back after a moment to cover the insects and keep them safe. Soon the spittlebugs will grow up and leave their foam home. They will join the other insects in the grassland.

1.The eggs of spittlebugs_____.

A. are laid in late spring

B. have to pull through a winter before they hatch

C. are protected by mother spittlebugs all the time

D. will be eaten by ants

2.According to the passage, the white foam_____.

A. does much harm to the plant

B. protects the plant from being harmed

C. is where a mother spittlebug is living

D. is plant juice mixed with spittlebugs’ waste and the air

3.Which of the following is a function of a foam home?

A. Protecting the bugs from being eaten.

B. Helping the bugs find food.

C. Providing enough drinking water for the bugs.

D. Keeping the plant from drying out.

4.After the spittlebugs grow into adults, they______.

A. continue to make foam

B. take on a different look

C. begin to eat tiny frogs

D. begin to do harm to plants

高三英语阅读理解中等难度题查看答案及解析

阅读理解。

In late summer or early fall the large, yellow seed heads of sunflowers will be ripening. If gardeners can keep off the birds and other wildlife trying to eat the seeds, they can have a large harvest. The bright yellow blooms will make a rainbow garden, brightening up any space.

However, planting the sunflower seeds is a skilled job. Plant seeds no deeper than the full length of itself. Smaller sized sunflowers can be spaced a foot apart. Larger varieties will need to be spaced as far apart as three feet. This allows ripe plants enough space for the seed heads to ripen without knocking the ripe seeds off before gardeners have a chance to harvest them.

Most sunflower seeds, especially those with eatable seeds, are large enough to handle without the need for seed sorters. This is why sunflowers make an excellent choice for a children's garden as well. Gardeners will want to mix plenty of soil fertilizers into the ground as sunflowers tend to be heavy feeders.

Sunflowers can be slow starters and the tiny new plants don't seem to grow very rapidly. Gardeners should protect the new plants as they begin to grow. Once they get going, sunflowers are able to out-grow many weeds, making them easier to grow in the home vegetable garden than many other plants.

Most pests and diseases are not a bother to the sunflower, however, more than one gardener has said that their lovely looking plants were destroyed overnight by hungry squirrels, mice or birds. To preserve their harvest, gardeners can cover the ripening seed head with stockings or net cloth to help keep the destroyers off the seeds.

Planting sunflower seeds is easy and can help even the smallest gardener feel successful in their gardening attempts.

1.What is the passage mainly about?

A. How to plant sunflowers.

B. Different kinds of sunflowers.

C. Ways to preserve sunflowers.

D. Tips on making your garden bright.

2.Why should enough space be left between sunflowers?

A. To prevent birds from eating sunflower seeds.

B. To offer the sunflowers enough sunlight.

C. To protect the ripe seed heads before harvest.

D. To help the sunflowers grow stronger.

3.Why do children love to grow sunflowers in their garden?

A. They want to decorate their garden with sunflowers.

B. The seeds are easy to plant and unnecessary to sort.

C. They want to share their own harvest with their parents.

D. Sunflowers don’t need too much soil fertilizer.

高三英语阅读理解中等难度题查看答案及解析

One spring, two friends and I sought permission to plant a garden. Our school was located in the downtown area of a large city. There wasn’t_______of a backyard._______ , it was our garden, a stone-covered dirt parking lot with no extra space. However, we carefully_______taking into account the area that received the best sunshine.

The three of us_______the headmaster with our plan for a small area to plant some squash, tomatoes and cucumbers. The only real _______　 involved was to rent a rake(耙), a pickax(丁字镐), and a hoe(锄头). However,_______ the headmaster’s permission would still be difficult. We will never forget his _______ to our request. With a slightly bored tilting (偏斜) of his head, he _______ replied, “ You are wasting your time. Nothing will ever grow there! But go ahead _______ you still want to.”

We had received permission_______ ! So what if it wasn’t enthusiastic? We rented tools, raked four inches of stones into neat walls _______ the garden, raised the pickax and _______what must have been a former waste area. A gardener dream-dark, rich soil just sitting there_______ to be discovered. We looked at each other, repeating together: “Ah, nothing will grow there.” As you might have_______ by now, things did grow there in our garden.

Have you ever _______ that way about your life-Nothing will grow there… Have you felt　 _______ about your life’s progress? Worried about crop failure? Disappointed that nothing good ever seems to　 _______ ? Don’t believe that “Nothing will grow there”. It’s never too　 _______ to be who you might have been. You may not always see the _______ for growth, but it is there. All the rich soil you need may be left just _______ the surface, but can only be discovered after you begin digging.

1.A.more B.little C.much D.less

2.A.Suddenly B.Now C.Again D.Actually

3.A.carried out B.laid out C.gave out D.made out

4.A.greeted B.ignored C.approached D.lectured

5.A.cost B.reward C.bargain D.bonus

6.A.allowing B.getting C.granting D.adopting

7.A.promise B.tease C.response D.result

8.A.warmly B.coldly C.readily D.hesitantly

9.A.if B.unless C.even if D.as if

10.A.at most B.at least C.at first D.at last

11.A.separating B.setting C.establishing D.outlining

12.A.carved B.landed C.struck D.smoothed

13.A.waiting B.staring C.glancing D.lying

14.A.wished B.guessed C.liked D.planned

15.A.lost B.made C.followed D.felt

16.A.discouraged B.excited C.puzzled D.awkward

17.A.go up B.bring up C.come up D.pile up

18.A.hard B.easy C.early D.late

19.A.potential B.foundation C.vision D.strategy

20.A.beyond B.beneath C.above D.off

高三英语完形填空中等难度题查看答案及解析