问题 选择题

2012年10月10日北京时间17时45分诺贝尔奖评委会宣布,2012年度诺贝尔化学奖授予美国科学家罗伯特·洛夫科维茨以及布莱恩·克比尔卡,因为他们在 “G蛋白偶联受体”研究方面作出了突破性贡献。G蛋白偶联受体是我们细胞膜上的一种蛋白质,它好比是一把锁,它可以被打开,打开之后就可以引发一系列的各种化学反应。下列叙述正确的是[    ]

A.G蛋白偶联受体是一把锁

B.G蛋白偶联受体是我们细胞膜上的一种蛋白质

C.研究“G蛋白偶联受体”不涉及化学学科知识

D.研究“G蛋白偶联受体”不涉及生物学科知识

答案

答案:B

题目分析:G蛋白偶联受体是我们细胞膜上的一种蛋白质,它好比是一把锁,但它并不是一把锁。研究“G蛋白偶联受体”既涉及化学学科知识,也涉及生物学科知识,B正确,其余选项都是错误的,所以正确的答案选B。

点评:该题是常识性知识的考查,难度不大。试题结合最新科技,有助于培养学生学习化学的兴趣,激发学生的求知欲,有利于培养学生的创新思维能力。

阅读理解

Welcome to Phillip Island Nature Park and the penguin Parade(企鹅列队). You will see the world’s smallest penguins— the little penguins appearing from the ocean and crossing the beach to their home in line. It's a natural experience. Remember the Little penguins are wild. You are a visitor to their home.

Making the most of your visit

Here are some helpful hints(提示) :

●The Penguins Parade last 50 minutes from the time penguins first cross the beach.

●Dress in warm clothes, for the Paradeis in the open air on the beach.

●It is best to get down to the beach at least 15 minutest before the parade begins.

Protecting the Penguins

We do have some simple rules—designed to protect the penguins and make your visit more enjoyable.

●Photography—including video cameral is not allowed. Photography during the Parades. Make sure that your cameral is placed inside your bag, or in a bag provided, before walking down to the beach, Photographs can be bought at proper price in the gift shop.

●Smoking is not allowed anywhere.

●And remember, the penguins are wild birds so please don't try to touch them.

小题1:During the Penguin Parade, people________.-

A. are allowed to smoke              B had better wear warm clothes.

C. have to hand in their bags              D. Can take photos of the penguins

小题2:Which of the following statements is WRONG?

A.The Little Penguins go back home in line.

B.The whole Penguin Parade lasts 50 minutes.

C.People have a chance to touch the penguins.

D.The Penguin Parade takes place on the beach.小题3:The passage is written mainly to________.

A.help make people's visit more pleasant

B.introduce the life of the Little Penguins

C.welcome people to Phillip bland Nature Park

D.encourage people to protect the Little Penguins

单项选择题