Viruses can become a worldwide problem.
举一反三
- --Can you get me a ticket for the match? --____________. A: Sorry, no problem. B: Certainly, no problem C: Excuse me,I can't D: Certainly, not problem
- (9) Unemployment has become an increasing problem in the recent past. What factors contribute to an increase in unemployment and what steps can be taken to solve the problem?
- These findings ________ worldwide research on factors contributing to viruses in marine waters. A: prompted B: estored C: offered D: formed
- Think of your problem as a ________then it becomes less of a problem.
- The duality of a dual problem is not necessarily the primal problem. ( ）