what high speed the coaster is moving at 后为什么加at

what high speed the coaster is moving at 后为什么加at High-speed What is the speed limit? 速度快是at a high speed 还是at the high speed what a high speed he is runing at Could you tell me _____- Certanily.In half an hour.A.when will the high speed train arriveB.when the high speed train will arriveC.when would the high speed train arriveD.when the high speed train would arrive the high-speed rail line took china about 18 months()() high-speed Internet high speed data card the industry in our country has developed at ____ since 1979a. rapid speed b.quick speed c.high speed d. fast speed 【初二】at high speed可以加the吗?可以是at the speed以最快速度少打了一个high= = high-speed internet connection是什么? What is the past tense of the verb speed with a high speed 还是at a high speed?China has developed -- such a high speed. The train CQ1,________ trial operation on the Shanghai-Hangzhou high-speed 为什么用starting what is the( )(high) of the building what is the speed of to day's trains?翻译 how can we get there?( )take the high-speed train?why don't