题目

A. predicts      B. operation     C. employ      D. limited      E. majorityF. also        G. reservations     H. dreams     I. necessary    J. estimate      We're waiting to take trips to outer space. When will it happen? According to individuals in the growing field of space tourism, it may be in five or fifty years.     Space Adventures is taking ____55____ for the flights, similar to the first manned spaceflights. The trip will cost $ 90,000, with a $ 6,000 deposit required.  More than 200 people have made reservations, said Sarah, Dalton, the词语释义选出与句子中划线部分意义最接近的选项。—In our school，some students always litter on the ground．—So they do. Old habits die hard ．A.It's hard to throw away the bad habitsB.It's good to have some habits．C.It's easy to change the habits．D.It's fun to follow the rules．