Sometimes the __________ (solve) to a problem is cheap and easy; sometimes it is difficult and expensive.
solution
举一反三
- ForshipsequippedwithanSES,itis（）and（）fortheoperatortosendadistressalert. A: easy/reliable B: difficult/cheap C: stable/compulsory D: easy/expensive
- Climate change is not a(n) ________ problem to solve and it will take years. (easy / difficult)
- Climate change is not a/an _______ problem to solve and it will take years. A: difficult B: critical C: easy D: important
- 【单选题】It is () to solve A. a rather difficult problem B. rather a difficult problem C. rather difficult a problem D. a problem rather difficult
- Sometimes the __________________ is more expensive than the present itself.
内容
- 0
What did the computer use to be（） A: Large, but cheap, easy to use. B: Large, expensive, very popular. C: Small, cheap, easy to use. D: Large, expensive, hard to us
- 1
This problem is________. A: too difficult for me to solve it B: too difficult for me to solve C: very difficult, I can’t solve D: too difficult for I solve it
- 2
Sometimes it’s difficult to find the _____ date on the food package.
- 3
It is sometimes difficult to tell the difference ______ the infinitive, the participle and the gerund.
- 4
The tone of the story shows the author believes the problem is ______. A: difficult to solve, perhaps impossible B: difficult to solve but not impossible C: impossible to solve D: beyond the question