题目内容

【题目】 农作物地方品种是重要的农作物品种和基因资源,是维护国家生态安全、农业安全的重要战略资源。近年来我国农作物地方品种数量呈急剧下降趋势,但在西南地区还保留较多。

据此完成下面小题。

1我国农作物地方品种数量急居下降,其原因主要是

A.技术要求高B.育种成本高能力差

C.抗灾能力差D.单产较低

2西南地区地方品种保留较多的主要原因是

A.地域较封闭B.政策性保护

C.自然灾害少D.耕地比重小

【答案】

1D

2A

【解析】

1育种成本和技术要求不是影响地方物种发展的主要原因,例如杂交水稻和海水稻是符合我国粮食需求的物种,所以投入大量人力物力研究,地方物种急剧下降的主要原因是地方物种单产低,满足不了我国对粮食的需求和农民增收的需要,最终被淘汰,D项正确,AB错误。地方物种是属于当地原生物种,对当地环境适应性强,C错。所以选D。

2西南地区山地较多,地形崎岖,较为封闭,人类活动少,地方品种得以保留,A项正确。西南地区滑坡泥石流等灾害多,C错。耕地比重和政策性保护对品种的影响小,BD错误。所以选A。

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【题目】Is this a car? Is it a smart phone? Is it a gaming machine?

Yes to all three. The Toyota Fun-Vii is a pleasure palace on wheels.

If Toyota has its way, paint jobs could become a thing of the past, because it has introduced an amazing car that can change its whole look in an instant.

The Vii in Fun-Vii, which stands for “Vehicle,Interactive, Internet It is a small three-seater car that looks like a smart phone, so it is called a smart phone on wheels.Inside and out, most aspects of the car can interact(互相作用) with the internet and be controlled by a smart phone.The magical car allows the owners to download pictures from their phones onto the outside, so that the look of the car could be changed instantly.The color inside could also be changed to reflect the owners mood.Just as the company president Akio Toyoda said, "A car must appeal to our emotions.If its not fun, its not a car."

Its outside and inside are not made of solid paint but touch screens that can display pictures and videos.A network update function downloads all the latest software to make sure the car is always up-to-date, and it can provide the latest entertainment as well as information about its surroundings to the driver.As you drive around, the thoughtful car allows you to communicate with your friends in the nearby cars.It also helps you find your way from one place to another. Its all because the car is networked with all the other cars on the road and drives itself. The smart car is a practical, family sized vehicle fuelled by hydrogen, and it is one of the futuristic concept cars under the theme of "fun to drive, again".It heralds (预示) a not-too-distant future where people, cars and society are linked.

【1】Which of the following may not be a key word for the concept car?

A.Fun.

B.Interactive.

C.High-speed.

D.Smart.

【2】According to the text, Toyota Fun-Vii is _____.

A.a new concept car not powered by gas

B.an amazing car without any pollution

C.the latest software from network

D.a gaming machine with high speed

【3】The owners of the Fun-Vii can reflect their mood by _____.

A.downloading images to change the outside

B.interacting with computers while driving

C.changing the color inside the car

D.changing the speed of the car

【4】What does Paragraph 4 mainly tell us?

A.The ways of driving the Fun-vii.

B.How can you find your way in the Fun-Vii.

C.The unusual look of the Fun-Vii.

D.The new functions of the Fun-Vii.

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