【单选题】在金属切削加工中,下列哪一种运动是主运动
【单选题】They live on a busy street. There be a lot of noise from the traffic.
【单选题】They live on a busy main road. ______ must be very noisy.
【简答题】They live on a busy main road. ______ must be very noisy. A) There B) It C) That D) They
【判断题】They live on a busy road. it must be a lot of noise.
【单选题】下列说法正确的是( )
A.
一个数不是正数就是负数,而且一个数的绝对值一定是正数
B.
有理数中没有最大的数,而且也不存在相反数等于本身的数
C.
-3 2 和(-3) 2 表示的意义是一样的
D.
(-1) 2n 和(-1) 2n-2 (n为正整数)的计算结果相等
【单选题】— They live on a busy road. — There ______ be a lot of noise from the traffic. [ ]