问题 不定项选择

2006年美国和俄罗斯的科学家利用回旋加速器,通过钙48轰击锎249发生核反应,成功合成了第118号元素,这是迄今为止门捷列夫元素周期表中原子序数最大的元素,实验表明,该元素的原子核先放出3个相同的粒子x,再连续经过3次α衰变后,变成质量数为282的第112号元素的原子核,则上述过程中的粒子x是[ ]

A.中子    

B.质子    

C.电子    

D.α粒子

答案

A

阅读理解

阅读理解。

     An old man was fishing on the bank of a river. A child came to see him fishing. The old man was really

good at fishing and it didn't take long for him to catch a full basket of fish. The old man saw that the child

was very cute, and he wanted to give her a whole basket of fish. But the child shook her head. The old man

was surprised and asked, "Why don't you want the fish?" 

     The child replied, "I want the fishing rod (竿) in your hands."

     The old man asked," Why do you want the rod?"

     "It doesn't take long to eat all the fish in a basket. But if I have the fishing rod, I can go fishing by myself

and I won't be afraid of not having any more fish to eat."

     I think you will certainly say that the child is very smart. Wrong! If she doesn't know how to fish, she

cannot have fish to eat, even though she has the fishing rod. It's useless to only have a fishing rod. Fishing

skills are the most important, not the fishing rod.

     Too many people think that if they have a "fishing rod" in their life, they will no longer fear the wind and

rain. They are just like the child, who thought that if she had a fishing rod, she would have fish to eat.

1. The old man was fishing on the bank of _____.

A. a river

B. a lake

C. a pool

2. Why did the child refuse the fish the old man gave her?

A. Because she didn't like fish.

B. Because she wanted his fishing rod.

C. Because the old man had few fish.

3. The writer thought the child was _____ after she explained why she didn't want the fish.

A. smart

B. hardworking

C. silly

4. The article mainly tells us _____.

A. if you have a "fishing rod" in your life, you won't be afraid of anything

B. if you have a fishing rod, you'll have a lot of fish to eat

C. "fishing skills" are more important than "the fishing rod" in life

5. What is the best title (标题) for the article?

A. The Fishing Rod

B. The Fishing Man

C. The Fishing Girl

单项选择题