1.Cars do cause people some health problems, in fact far more serious _____ than computers do. A. one B. ones C. it D. those
2. China _____ at a tremendous rate, an outstanding achievement never seen before, during the past two decades.
A. developed B. has developed C. is developing D. had been developing
3. _____ participation in public decision-making, telephone conference calls are widely used. A. Extend B. Extending C. To extend D. Having extended
4.37. Tears of joy and happiness came to my eyes _____ we won the first prize in the sports meeting
A. while B. as C. unless D. before
特想问问as和那个while when 的区别 还有代词中that one ones those的区别
参考资料:大脑~