下列说法正确的是（） A．卢瑟福的α粒子散射实验揭示了原子_爱下问搜题

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问题选择题

下列说法正确的是（）

A．卢瑟福的α粒子散射实验揭示了原子核有复杂结构

B．天然放射现象的发现揭示了原子核有复杂结构

C．汤姆生发现了电子，并由此提出了原子的核式结构学说

D．α射线，β射线，γ射线本质上都是电磁波，且γ射线的波长最短

答案

答案：B

卢瑟福的α粒子散射实验只是揭示了原子的核式结构，AC错；只有γ射线本质上都是电磁波，D错；

阅读理解

任务型阅读。
     Time management is important in our daily life. There never seems to be enough hours in the day to
accomplish all you need to do. Here are some tips that might be of some help to you.
     ●Set up a plan. Go for a week at a time, and decide the most important ones. Include things you
want to accomplish. Focus mostly on the things that are important to you.
     ●Control your stress. No matter what kind of pressure mounts on you, try to keep cool. Stressing
out can lead to an early breakdown, which is definitely counter-productive when you have a list of things
to do. It's easier to take a 10-minute break and cool off than to work all week with stress.
     ●Shut your door. When working under a schedule, perform your important tasks with your door
shut to get them done. This will ensure a better quality time to get what needs to be done, done.
    ●Focus on one thing at a time. Forget trying to multi-task! You will lose concentration, and it will
take you longer to accomplish what you set out to do.
    ●Just say "no." If you are constantly interrupted, and you really don't have the time to help out, just
say "no." You're only one person, and you can't save the world by yourself!
    ●Stop wasting time on the phone. While talking on the phone, keep your conversations short, and
to the point and you'll waste much less time.
    ●Be realistic. You can only do what you can do. Don't set out to accomplish the impossible. Do
your best, but keep realistic expectations of yourself.
    ●Relax. The most important thing is remember to take time to relax, and regroup. You need a break
every now and then to keep working efficiently. Even if it's a 10-minute walk, get away from your list and
get refreshed.
   As families today get busier and busier, it's important to your own mental health to keep things on track. Don't delay; get your life in order now.

Theme: How to Make the Most of Your Time

There is some 1 on how to make full use of time

First of all, make a plan for the things you are   2   to do.
However much pressure you bear, you should try to keep cool; otherwise you will   3   down sooner or later.
You'd better be   4   to your tasks with your door closed in order that you can get them done   5   .
Try one thing at a time so that you can   6   on it.
You can refuse to help others without enough time in order that you can   7   being interrupted.
Make a brief talk on the phone so as not to   8   valuable time.
You should not   9    too much of yourself; it's better to do what you can do .
It's important for you to make yourself   10   in daily life.

单项选择题

缓刑考验期限，从( )起计算。

A．羁押之日

B．判决确定之日

C．判决宣告之日

D．判决执行之日