_________either the twins or John going with ...

_________either the twins or John going with me when the play _________here?

A. Is; is put on             B. Are; is put on             C. Is; is put up                D. Are; is put up

高三英语单项填空简单题查看答案及解析

_________either the twins or John going with me when the play _________here?

A. Is; is put on        B. Are; is put on       C. Is; is put up        D. Are; is put up

高三英语单项填空中等难度题查看答案及解析

—Shall we go for a picnic on Saturday or Sunday?

—　　Either time is OK with me.

A. It depends.     B. Up to you.         C. Why not?         D. Don’t mention it.

高三英语单项填空中等难度题查看答案及解析

When we go out traveling,we need either a map or GPS to point us in the right direction.But bumblebees（大黄蜂）have neither of these things,yet they still know the best route.Why is that?

It turns out that these hard-working little bees try many possible passages before picking out the best one and remembering it the next time they journey out.They learn from“trial and error”,according to a study by scientists from the University of London.

We use it all the time in our daily lives—trial and error is a helpful problem-solving method.It is the basic concept of“learning from your mistakes”.Most of the time,we fail on our first try,so we analyze the failure,make adjustments and try again.After repeating this a few times,we finally get things right.

This might sound a bit tiring,but it’s certainly effective and it works for bumblebees.

In the study,scientists set up five artificial flowers in a field.Each one of them was fitted with motion-triggered（运动触发的）cameras and had landing platforms with drops of sugar in the middle to attract the bees.

At first,scientists noticed the bees’ flying routes were long and complex.But after they gained enough experience,they gradually got to their destination quicker.Every time a bee tried a new route that was shorter than the route it had tried before,it was likely to use it again.Otherwise the new route would simply be given up and another one was tested.

“The speed at which they learn through trial and error is quite extraordinary for bumblebees,as this complex behavior was thought to be one that only larger-brained animals have,”Professor Lars Chittka,leader of the study,told Sciencedaily.com.

In fact,the smart bumblebees don’t try every possible route.Normally,they would only try about 20 out of the 120 possible routes to visit the flowers.

More interestingly,scientists found that if they removed a flower,bees would continue looking at that location,even if it has been empty for a long time.“It seems bees don’t easily forget a fruitful flower,”Chittka said.

1.The bumblebees are good at finding the best route because ________.

A. they have relatively smaller brains

B. their body parts function like GPS

C. they try out different routes and remember the best ones

D. they take the trouble of testing every possible route

2.The author explains the bumblebees’ behavior of trial and error by ________.

A. using numbers　　 B. making a metaphor（比喻）

C. making comparisons　　 D. talking about human behavior

3.The study led by professor Lars Chittka suggests that ________.

A. bumblebees try to keep their flying routes long and complex

B. every new route the bumblebees take is shorter than the one they take before

C. bumblebees are familiar with every flying route they have taken before

D. scientists find it unbelievable that bumblebees learn from their mistakes so quickly

4.What is the main point of the article?

A. Bumblebees are as smart as large-brained animals.

B. Trial and error is an effective way to solve our daily problems.

C. A new discovery about how bumblebees find the best routes through trial and error.

D. How bumblebees remember the best routes,small as their brains are.

高三英语阅读理解中等难度题查看答案及解析

一Shall we watch the news or the talk show?

——________Either will do with me．

A．It all depends．                         B．It doesn’t matter．

C．It’s all right．                         D．It’s up to you.

高三英语单项填空中等难度题查看答案及解析

—John，when shall we meet again，Thursday or Friday?

—　　　　　　 ．I'll be off to London then．

A．Either　　             B．None　　                 C．Both             D．Neither

高三英语单项填空中等难度题查看答案及解析

(2013·山东济宁模拟)When you are done with the book, go out for a walk or ________.

A．whoever　 B．wherever　 C．whatever　 D．however

高三英语单项填空中等难度题查看答案及解析

When you are done with the book, go out for a walk or ________.

A．whoever　 B．wherever　 C．whatever　 D．however

高三英语单项填空困难题查看答案及解析

– Dad , when will you be free?  You agreed to go to the seaside with me four days ago.

-- I am sorry, Jean. But I think I will have a ______ holiday soon.

高三英语单项填空简单题查看答案及解析

46. --- When shall we go camping again?

--- You _______ the day. Any day is OK with me.

高三英语单项填空简单题查看答案及解析