We will have to cancel the conference______ more people sign up to attend.
A: if
B: either
C: unless
D: because
A: if
B: either
C: unless
D: because
举一反三
- The more chemical people send into the air, the less land we will possibly have because water levels will go up due to global warming.（） A: Right B: Wrong C: Not Mentioned
- Why are we more likely to tell more of our friends about unsatisfied experiences with a business than satisfied ones（） A: Because we aren"t inclined to have a negative feeling. B: Because we often feel negative emotions more intensely. C: Because we seem to feel more intensely. D: Because we often hear people express their negative emotions.
- Why can’t man prevent the world from being polluted A: It’s because there are many developing nations. B: It’s because people use too many man-made materials. C: It’s because we have more and more industry. D: It’s because we are building more vehicles.
- ________ the rain stops before 12 o’clock, we will have to cancel the game. A: As B: Since C: While D: Unless
- ________ the rain stops before 12 o’clock, we will have to cancel the game. A: As B: Since C: While D: Unless