Unfortunately, some natural signs which might...

Unfortunately, some natural signs which might have helped more people survive the earthquake were ________.

A. abandoned　　　　　　 B. ignored

C. deserted　　　　 　　 D. rejected

高三英语单项填空中等难度题查看答案及解析

Here are some books which can inspire kids to think about nature and the environment.

How to Raise Monarch Butterflies

—By Carol Pasternak

Have you ever watched a monarch transform from a caterpillar (毛虫) to a butterfly from up close? In this book, learn everything about the monarch life cycle and how to raise monarchs from eggs to adult butterflies. You will also get to know the efforts involved to protect the species.

A Kid’s Guide to America’s Parks

—By Erin McHugh

This year, the US National Park Service’s National Park Week is on April 21-29. During the week, all the national parks offer free admission. Enrich your knowledge with this book, as it introduces the national parks and some interesting places in the US, including their geography, specific animals as well as environmental challenges. The book’s featured places include Yosemite National Park, Ellis Island (home of the Statue of Liberty) and the National Park of American Samoa, the only U.S. national park south of the equator (赤道).

Where Do Recyclable Materials Go?

—By Sabbithry Persad

Tiana had been learning about recycling at school. But when her dog, Bubbles, gets lost running after a recycling truck, she ends up learning a lot more about recyclable materials than ever! Follow Tiana and her family as they search for Bubbles around town and at the Materials Recovery Facility. Along the way, readers will learn a lot about recycling and how they can do their part in protecting the environment.

Scrap Kins Build-It Book Volume 1

—By Brian Yanish

Meet the Scrap Kins. They are creative, friendly monsters (怪物) who live in a recycling center, known as Scrap City. They’ll show you how to turn junk into pretty cool things. Readers will learn how to create cute bags from old jeans, beautiful ships from milk boxes, and more. Remember that one person’s trash is another person’s treasure!

1.Which author teaches you how to make an artwork from wastes?

A. Carol Pasternak.　　 B. Erin McHugh.

C. Sabbithry Persad.　　 D. Brian Yanish.

2.Why is the National Park of American Samoa special?

A. There is a famous statue in it.

B. It is free for admission.

C. It has its specific animals.

D. It lies south of the equator.

3.Which book is most probably written in the form of a story?

A. How to Raise Monarch Butterflies

B. A Kid’s Guide to America’s Parks

C. Where Do Recyclable Materials Go?

D. Scrap Kins Build-It Book Volume 1

4.The common goal of the four books is to _________.

A. teach kids practical skills

B. raise kids’ environment awareness

C. comment on kids’ behavior

D. make kids interested in geography

高三英语阅读理解中等难度题查看答案及解析

you lose the paper document，sign in www.sohunt.com，     you might download all you need．

A．If；which            B．So long as；what      C．In case；where                D．Even if；as

高三英语单项填空简单题查看答案及解析

A warm thought suddenly came to me ______ I might use the pocket money to buy some flowers for my mother’s birthday.

A. that                                   B. when                                C. if                             D. which

高三英语单项填空简单题查看答案及解析

Crown shyness(树冠羞避) is a mysterious natural phenomenon in which the crowns of some tree species do not touch each other, but get separated by a gap clearly visible from ground level. The effect usually occurs between trees of the same species, but has also been observed between trees of different species.

There are many theories going around, most of which make sense, but no one has been able to prove without the shadow of a doubt why some trees avoid touching each other.

In his 1955 book Growth Habits of the Eucalypts, Australian forester M.R. Jacobs writes that the growing tips of the trees are sensitive to abrasion(擦伤), which results in crown shyness phenomenon. This theory was also supported by Dr. Miguel Franco. Some experiments have shown that if trees displaying crown shyness are artificially prevented from swinging in the wind and touching each other, they gradually fill up the gaps between them.

But while the above theory is arguably the most widespread, it’s certainly not the only one. Some scientists have suggested that crown shyness is a mechanism to stop the spreading of leaf-eating insects. These pests have been known to work together and create structures that extend up to 10 cm off of tree branches in order to reach other plants, so the gaps are the trees’ natural defense method.

One Malaysian scholar studied many trees, but found no traces of abrasions, despite their clear crown shyness. Instead, he suggests that the growing tips of the trees were sensitive to light levels and stopped growing when they got too close to other trees. Plants are able to sense how close they are to other plants and in order to get more light, they give off some chemical element to stop other trees from growing too close.

Whatever the reason, one thing is for sure: plants are more intelligent than people used to think.

1.What can we know about crown shyness?

A. It can cause abrasion between trees.

B. It only happens between the same species.

C. It has been discovered for only half a century.

D. No agreement has been reached about its real cause.

2.What will happen if trees showing crown shyness are stopped from swinging?

A. The trees will stop growing and even die.

B. The gaps between the trees will grow wider.

C. The crown shyness phenomenon will disappear.

D. The gaps between the trees will remain the same.

3.What’s tree’s reaction when attacked by pests according to the text?

A. Swinging less in the wind

B. Leaving space between their crowns

C. Spreading their branches and leaves

D. Stopping growing for a period of time

4.Which statement might the Malaysian scholar agree with?

A. Trees have special ways to attack others.

B. Some insects stop trees growing too close.

C. Trees compete with their neighbors for light.

D. Trees won’t touch each other to avoid diseases.

高三英语阅读理解中等难度题查看答案及解析

Nearly a month had gone by ________ they showed some sign of giving up the price for which they had held out.

A. until          B. while        C. before         D. so that

高三英语单项填空中等难度题查看答案及解析

Suddenly the idea came to me ____ I might turn to Mr．Smith for help．

高三英语单项填空简单题查看答案及解析

Suddenly the idea came to me ____ I might turn to Mr．Smith for help．

A．what                 B．that                    C．which                D．whom

高三英语单项填空中等难度题查看答案及解析

---I ’ m afraid that you might have got burnt in the big fire last weekend.

---Well, I ________.

高三英语单项填空中等难度题查看答案及解析

---I ’ m afraid that you might have got burnt in the big fire last weekend.

---Well, I ________.

高三英语单项填空困难题查看答案及解析