The professor gave ________ on how to do a scientific research well.
A. two pieces of suggestions
B. two pieces of advices
C. two suggestions
D. two advice
九年级英语单选题中等难度题
The professor gave ________ on how to do a scientific research well.
A. two pieces of suggestions
B. two pieces of advices
C. two suggestions
D. two advice
九年级英语单选题中等难度题查看答案及解析
Professor Li gave us a very useful ________ on how to prepare for the exam.
A. advice B. information C. experience D. suggestion
九年级英语单项填空中等难度题查看答案及解析
In the first class, the teacher gave his students ______ on how to use the computer.
A. standards B. instructions C. levels D. tasks
九年级英语单选题中等难度题查看答案及解析
The professor has given us _______________ advice on how to improve our memory.
A. much B. many C. a lot D. several
九年级英语单项填空中等难度题查看答案及解析
The professor arrived in Zhenjiang on the morning of 16th May and gave us lecture that afternoon.
A. a B. an C. the D. 不填
九年级英语单选题中等难度题查看答案及解析
While the blind man was riding on the MRT, a young man his seat to him. How kind he is!
A. gave B. gives C. didn’t give D. giving
九年级英语单选题中等难度题查看答案及解析
The policeman gave us much on how to protect ourselves when we are in danger.
A.example B.tip C.note D.advice
九年级英语单选题中等难度题查看答案及解析
Yang Liwei talked ______lot with the three spacemen and gave them useful advice on how to live better in______space．
A. a；a B. ／；the C. a；an D. a；／
九年级英语单选题中等难度题查看答案及解析
Ms Green gave us a very useful_______on how to prepare for the coming exam.
A. advice B. information C. experience D. suggestion
九年级英语单选题中等难度题查看答案及解析
How to investigate
①Planning
Decide on a scientific problem to investigate
For example， a student named Mary has decided to research into how quickly sugar dissolves（溶解） in water．
Write down your hypothesis
You may already have an idea of what you expect to happen in your investigation． This idea is called your hypothesis． It may not be right! It is just an idea， though it may be based on work in science which you have done before． The aim of your investigation is to test your idea．
Decide what variables（变量） you are dealing with Things like temperature， size， weight， and colour are called variables． Variables are things you can measure（测量）．
In your investigation， you have to decide what the variables are， which ones you will keep fixed， and which you will change．
You need to change just one variable at a time． If lots of variables change at once．it won't be a good test．
Decide what equipment you need， and in what order you will do things
Prepare tables for your results
②Getting your evidence（数据）
•Make your measurements， and record your results
③Reaching conclusions
Look for patterns in your results
Present your conclusions
What links（关联） did you find between any of the variables？ How would you explain these links？
④Checking your findings
Compare your conclusions and hypothesis
Do your results support your idea？
1.What does the underlined word "hypothesis" most probably mean？
A. reason
B. result
C. method
D. guess
2.In Mary's investigation， which of the following about the variables is true？
A. She can only change one variable at a time．
B. Some of the variables can't be measured．
C. Her weight and age can be the variables．
D. The temperature of water cannot be a variable．
3.What is the passage mainly about？
A. How to do a scientific research．
B. How to explain a scientific finding．
C. How to deal with a chemistry problem．
D. How to understand some chemistry knowledge．
九年级英语阅读单选困难题查看答案及解析