问题 选择题

下列事实不能用勒夏特列原理解释的是      (  )。

A.氢气和氮气合成氨的反应中,在加压下有利于氨的生成

B.醋酸溶液中滴入少量稀盐酸,溶液中c(H)增大

C.用热的纯碱水溶液洗涤油污物品时,去污效果较好

D.加催化剂V2O5,能提高SO2转化为SO3的转化率

答案

答案:D

催化剂只能改变反应速率,而不能使平衡发生移动。

单项选择题
阅读理解

  You're rushing to get out of the door for a meeting, but you just can't seem to find your car keys. Or you've got tickets booked for a Caribbean cruise(坐船旅行) , but your passport disappeared. Or maybe you've just come back from a grocery store tour and realized…Hey, did I leave my baby in the checkout line?

Ok, you've probably never gone to the extremes of our last example (we hope), but most of us experience slip - ups like these on a daily basis. No matter how smart you may be, it doesn't mean your brain won't turn to Swiss cheese every so often, and no amount of e-mail reminders can help you remember where you left your TV remote or lucky penny.

But now, there is a new pair of eyeglasses that can help to find all those little things you know must be around somewhere :  Let's call it Vision 2.0.

The new glasses, which are being developed in a Japanese lab under the code name Smart Goggles,are similar to a Google search engine for your eyes. The high - tech glasses come with a camera that records everything you see on a daily basis, and boast built - in object recognition software that allows them to keep track of whatever comes across their field of vision. If you've got a collection of art sculptures that the camera can't recognize immediately, no problem :  Just say the name of each item,  and the glasses will memorize them right away.

The Smart Goggles' superb tracking abilities mean that whenever you're looking for your keys, your overdue library book, or yes, even your baby, all you have to do is to say the word and the Goggles' camera will show you the last time your desired object appeared on screen, telling exactly where you'll be able to find it.

Though the glasses are still too big for general use, the research team in Japan believes that they'll be able to make the modem glasses smaller to the size of normal glasses in the near future, making them the perfect new accessory for yourself or any other absent - minded Professor you know.

With these intelligent designs, you'll never lose anything again. Except maybe your glasses.

小题1:The best title for the passage should be _______.

A.A Habit of Forgetting Small Things

B.Usage of New High - Tech Glasses

C.How to Find Little Things Easily

D.Glasses Will Help Find Your Things小题2:Which of the following is a slip - up according to the passage?

A.You can't find your watch before going to work.

B.You can't work out a math problem in given time.

C.You don't know how to deal with a naughty boy.

D.You don't know how to get to a hospital.小题3:Which of the following statement is true about Smart Goggles?

A.They're a search engine used on the Internet.

B.They're a camera with recognition software.

C.They're software used in computers.

D.They're sunglasses protecting our eyes.小题4:Where are the new glasses being developed?

A.In China.

B.In America.

C.In Japan.

D.In France.