A.What works under one set of conditions at one time might work under the same conditions at other times.
B.Tools which a scientist uses for measurements are used to make mathematical calculations that may test his investigations.
C.A scientist should know more about other branches of knowledge to arrive in his achievement.
D.Knowing how to investigate, how to discover information is important to scientists.
单选题 | by the beauty of the countryside, the old couple decided to stay another week on the farm. | 查看答案 |
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单选题 | We can infer from the passage that . | 查看答案 |
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单选题 | If you'd like to watch a game show, you could turn on the TV to | 查看答案 |
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单选题 | Which of the following statement is NOT true? | 查看答案 |
单选题 | --I failed in the driving test. --Don't be so disappointed. , you'll have one more chance of trying it. |
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单选题 | We can infer from this passage that . | 查看答案 |
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单选题 | A sound scientific theory should be one that . | 查看答案 |
单选题 | What's the main purpose of this passage? | 查看答案 |
单选题 | According to the writer, the use of English in contacts among EU officials has . | 查看答案 |
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单选题 | The writer suggests that if the number of official languages was reduced . | 查看答案 |
单选题 | Which of the following statements is NOT tree? | 查看答案 |
单选题 | By the year 1889, there were just 541 bison in the whole of North America. | 查看答案 |
单选题 | You'd better carry a(n) tyre in the back of your car in case it breaks down on the way. | 查看答案 |